SwiftUI how to adjust different screen sizes

You are putting static spacing so that issue is occurring. you can fix it using Spacer() Modifier and give some Frame().

var body: some View {
    NavigationView {
        List {
            ForEach(peoples, id: \.self) {person in
                PersonView(person: person)
            }
        }.navigationBarItems(leading:
            VStack(spacing: 5) { // Change Spacing as you want
                HStack {
                    Text("Find People").font(.system(size: 30)).bold()
                    Spacer()
                    Text("Follow All").foregroundColor(Color(ColorUtils.hexStringToUIColor(hex: Constants.THEME.THEME_COLOR)))
                }
                HStack() {
                    Text("Import from:")
                    Spacer()
                    ForEach(socialIcons, id: \.self) {icon in
                        Image(icon).resizable().frame(width: 25, height: 25)
                            .padding(.horizontal)
                    }
                }
            }.frame(width: UIScreen.main.bounds.width-20, alignment: .center)
        )
    }
}