I want to add a notification for a correct answer... I can't get this to work! Any help is appreciated...

import SwiftUI

struct ContentView: View {

let moves = [ "👊🏼", "✋🏾", "✌️"]

@State private var compChoices =  Int.random(in: 0..<3)
@State private var shouldWin = Bool.random()

@State private var score = 0
@State private var questionCount = 1
@State private var showingResults = false
@State private var correctAnswer = true

var body: some View {
    ZStack {
        RadialGradient(stops: [
            .init(color: Color(red: 0.12, green: 0.14, blue: 0.12), location: 0.3),
            .init(color: .white, location: 0.5),
        ], center: .top, startRadius: 200, endRadius: 700)
            .ignoresSafeArea()

        VStack {
           Spacer ()
            Text("The computer chooses...")
                .font(.title)
            Text(moves[compChoices])
                .font(.system(size: 200))

            if shouldWin {
                Text("Which one wins?")
                    .font(.title)
                    .foregroundColor(.white)
            } else {
                Text("Which one loses?")
                    .font(.title)
                    .foregroundColor(.blue)
            }

                HStack {
                    ForEach(0..<3) { number in
                        Button(moves[number]) {
                            play(choices: number)
                        }
                        .font(.system(size: 80))
                    }

                }
            Spacer ()
                Text("Rock, Paper, Scissors")
                    .font(.largeTitle)
                Spacer ()
                Text("Score \(score)")
                    .fontWeight(.bold)
                Spacer()
            }
        .padding(2)       
            .alert("Game Over", isPresented: $showingResults) {
                Button("Play Again", action: reset)
            } message: {
                Text("Your score is \(score)")
                }

            }
        .alert(Text("Correct"), isPresented: $correctAnswer) {
            Button("Continue", action: playGame)
        } message: {
            Text("Your score is \(score).")
                .font(.title.bold())
                .foregroundColor(.blue)
        }
        func playGame() {
            compChoices = Int.random(in: 0..<3)
            shouldWin.toggle()
            questionCount += 1
        }

        func play(choices: Int) {
            let winningMoves = [1, 2, 0]
            let didWin: Bool

            if shouldWin {
                didWin = choices == winningMoves[compChoices]
            } else {
                didWin = winningMoves[choices] == compChoices
            }
            if didWin {
                score += 10
            } else {
                score -= 10
            }
            if questionCount == 10 {
                showingResults = true
            } else {
                playGame()
            }
        }
        func reset() {
            questionCount = 0
            shouldWin = Bool.random()
            score = 0
            compChoices = Int.random(in: 0..<3)
        }

    }

}

func playGame()
func play(choices: Int)
func reset()

need to move them out of the

var body: some View { …
…
}

as these are functions not views. If you move them to above the var body…, or below its closing brace, then that should be OK.

Also check your colours, as reading black text against a dark grey backgorund and white text just about where the gradient transistions to white, is a little too difficult to read.