I have project, where two list of different banks show currency rate. And i want when I choose currency in first List, second List will have autoscrolling to the same currency. I saw tutorials with buttons, but it's not what I need. I thought use onTapGesture, but I can't realise how to involve it in right way. Thanks for help anyway.

My code:

import SwiftUI

struct ContentView: View {
    @State private var date = Date()
    @State var currenciesPB: [ExchangeRatesPB] = []
    @State var currenciesNBU: [ExchangeRatesNBU] = []

    @State var scrollToCurrency: String = ""
    @State var choosenCurrency: String = ""

    var body: some View {
        ZStack {
            Color(.systemGray6)
                .edgesIgnoringSafeArea(.all)
            VStack {
                HStack {
                    Spacer(minLength: 110)
                    Text("Курси валют")
                        .font(.title2)
                        .padding()

                    Spacer()
                    Image(systemName: "chart.bar.xaxis")
                        .font(.title)
                        .padding()
                }
                .foregroundColor(.white)
                .padding(.top)
                .background(Color.init(#colorLiteral(red: 0.4558259845, green: 0.5886077285, blue: 0.5515387654, alpha: 1)))
                .edgesIgnoringSafeArea(.top)

                //PB
                VStack {
                    HStack {
                        Text("ПриватБанк")
                            .foregroundColor(Color.init(#colorLiteral(red: 0.3549223542, green: 0.3776315749, blue: 0.4196012616, alpha: 1)))
                        Spacer(minLength: 70)

                        Image(systemName: "calendar")
                            .foregroundColor(.gray)
                        DatePicker("", selection: $date, displayedComponents: .date)
                    }
                    .font(.title2)
                    .padding(10)

                    HStack(spacing: 60) {
                        Text("Валюта")
                        Text("Купівля")
                        Text("Продаж")
                    } .foregroundColor(.gray)
                    VStack {
                        List(currenciesPB, id: \.self) { currencyPB in
                            VStack {
                                HStack(spacing: 60) {
                                    Text(currencyPB.ccy)
                                    Text(currencyPB.sale)
                                    Text(currencyPB.buy)
                                }
                                .onTapGesture {
                                    let value = currencyPB.ccy
                                    choosenCurrency = value
                                }
                                //.listRowBackground(Color(.systemGray6))
                                .foregroundColor(Color.init(#colorLiteral(red: 0.3549223542, green: 0.3776315749, blue: 0.4196012616, alpha: 1)))
                            }
                        }
                        .padding(.top)
                        .onAppear() {
                            ApiPB().getCurrency { (currenciesPB) in
                                self.currenciesPB = currenciesPB
                            }
                        }
                    }
                }

                //NBU
                VStack {
                    HStack {
                        Text("НБУ")
                            .foregroundColor(Color.init(#colorLiteral(red: 0.3549223542, green: 0.3776315749, blue: 0.4196012616, alpha: 1)))
                        Spacer(minLength: 150)

                        Image(systemName: "calendar")
                            .foregroundColor(.gray)
                        DatePicker("", selection: $date, displayedComponents: .date)
                    }
                    .font(.title2)
                    .padding(10)
                    ScrollViewReader { proxy in

                        VStack {
                            List(currenciesNBU, id: \.self) { currencyNBU in
                                VStack {
                                    HStack(spacing: 60) {
                                        Text(currencyNBU.txt)
                                        //Text(currencyNBU.cc)
                                        Spacer()
                                        Text(String(currencyNBU.rate))
                                    }
                                    .listRowBackground(Color(.systemGray6))
                                    .foregroundColor(Color.init(#colorLiteral(red: 0.3549223542, green: 0.3776315749, blue: 0.4196012616, alpha: 1)))
                                }
                            }

                            .padding(.top)
                            .onAppear() {
                                ApiNBU().getCurrency { (currenciesNBU) in
                                    self.currenciesNBU = currenciesNBU
                                }
                            }
                        }
                    }
                }
                //                Spacer()
            }
        }
    }
}

struct ExchangeRatesPB: Codable, Hashable {
    let ccy: String
    let base_ccy: String
    var buy: String
    var sale: String
}

class ApiPB {
    func getCurrency(completion: @escaping ([ExchangeRatesPB]) -> ()) {
        guard let url = URL(string: "https://api.privatbank.ua/p24api/pubinfo?json&exchange&coursid=5") else { return }

        URLSession.shared.dataTask(with: url) { (data, _, _) in
            let currenciesPB = try! JSONDecoder().decode([ExchangeRatesPB].self, from: data!)
            DispatchQueue.main.sync {
                completion(currenciesPB)
            }
        }
        .resume()
    }
}

struct ExchangeRatesNBU: Codable, Hashable {
    let r030: Int
    let txt: String
    var rate: Double
    var cc: String
}

class ApiNBU {
    func getCurrency(completion: @escaping ([ExchangeRatesNBU]) -> ()) {
        guard let url = URL(string: "https://bank.gov.ua/NBUStatService/v1/statdirectory/exchange?date=20200302&json") else { return }

        URLSession.shared.dataTask(with: url) { (data, _, _) in
            let currenciesNBU = try! JSONDecoder().decode([ExchangeRatesNBU].self, from: data!)
            DispatchQueue.main.sync {
                completion(currenciesNBU)
            }
        }
        .resume()
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

You need to figure out what is the criteria for determining where the bottom ScrollView should scroll to and then set that using code like in the following simple example:

struct Kid: Identifiable {
    let id = UUID()
    let name: String
    let family: [String]
}

struct ScrollToView: View {

    //just make a quickie array of stuff to put in our ScrollViews
    let kids: [Kid] = [
        Kid(name: "Charlotte",
            family: Array(repeating: ["Karen", "Sarah"], count: 6).flatMap { $0 }),
        Kid(name: "Shauna",
            family: Array(repeating: ["Ella", "Dan", "Humphrey"], count: 6).flatMap { $0 }),
        Kid(name: "Mildred",
            family: Array(repeating: ["Neil", "Glynis"], count: 6).flatMap { $0 }),
    ]

    //needs to be the same Type as whatever the scrollTo criteria will be
    @State private var firstFamilyMember: String = ""

    var body: some View {
        VStack {
            ScrollView {
                ForEach(kids) { kid in
                    Text(kid.name)
                        .onTapGesture {
                            //set the scrollTo criteria based on what gets tapped in the top list
                            firstFamilyMember = kid.family.first!
                        }
                }
            }
            Divider()
            ScrollView {
                ScrollViewReader { value in
                    ForEach(kids.flatMap(\.family), id: \.self) { fam in
                        Text(fam)
                    }
                    //the important thing here is that the onChange handler has to be
                    //INSIDE the ScrollViewReader since that's where we have access
                    //to the value of the reader and can change it

                    //watch for changes in the firstFamilyMember value...
                    .onChange(of: firstFamilyMember) { _ in
                        //...and jump to that value in the bottom list
                        value.scrollTo(firstFamilyMember, anchor: .top)
                    }
                }
            }
        }
    }
}

Note: I wasn't sure how your ExchangeRatesPB and ExchangeRatesNBU matched up, so that's why I didn't use your original code to demonstrate.

Thanks @roosterboy for your help. I tried to implement this sollution to my project, but it still don't work.

ExchangeRatesPB and ExchangeRatesNBU have the same short name of some currencies: "USD", "EUR", "RUR"

WOOOW!😱😱😱 It's really working! Thanks @roosterboy for your help and advices!