I can't get past "hello world" when I run my app through the simulator

i expect it show "hello world" and then get off the screen so i could get to the other screens but it doesnt do that, it just stays like that

import SwiftUI

struct ContentView: View {

var body: some View {

Text("Hello World")

}

}

#if Debug

struct ContentView_Previews: PreviewProvider {

static var previews: some View {

ContentView()

}

}#endif