how can i access the teams in the teammateArray? then access the latest score.totalScore record to return an average?

Group {
                    ForEach(myRecords, id: \.self) { team in
                        Section(header: HStack {
                            Text(team.wrappedTeamName)
                            Spacer()
                            Text("My average: \(team.wrappedTeamName.count / Int(team.teammateArray[0].score.totalScore))")
                                .font(.subheadline)
                                .foregroundColor(.secondary)
                        }) {
                            ForEach(team.teammateArray, id: \.userId) { teammate in
                                NavigationLink(destination: TeammateView(teammate: teammate, genders: teammate.gender)) {
                                    Text("\(UserDefaults.standard.string(forKey: "lastName") ?? ""), \(UserDefaults.standard.string(forKey: "firstName") ?? "")")
                                        .font(.subheadline)
                                }
                            }
                        }
                    }
                }

                // this is how Paul reccomended to sort the NSSet

    @nonobjc public class func fetchRequest() -> NSFetchRequest<Team> {
        return NSFetchRequest<Team>(entityName: "Team")
    }

    @NSManaged public var createdAt: Date?
    @NSManaged public var id: UUID?
    @NSManaged public var teamName: String?
    @NSManaged public var teammate: NSSet?

    public var wrappedTeamName: String {
        teamName ?? "Unkown team"
    }

    public var teammateArray: [Teammate] {
        let set = teammate as? Set<Teammate> ?? []
        return set.sorted {
            $0.wrappedLastName < $1.wrappedLastName
        }
    }
}