For the moment, skip it. Just say ‘set up later’ and proceed. You can go to apple’s web page to reset your Apple ID, or use another Apple device as a trusted device to enter your Apple ID. You are doing basic setup, yes?? I don’t know if it’s a great idea to use the same login/administrator/startup password, but what do I know? Usually how it works is that there is a phone number or email associated with your Apple ID( 2 factor verification)so if you ever need to get in and use your Apple ID, or you forgot, or need to reset it, and you can’t via computer or iphone/iPad, then Apple will call, text or email you a 6 digit randomly generated code as many times as you need until you type it in correctly and both codes match( the one on their end+ the one they sent to you). When both match then voila your apple id unlocks
thats all i got
john b