How to get to the apple store without first apple id

How to get to the apple store without first apple id

So i want to reinstall my mac but when i choose the disk apple asked me for the apple id to sign in to apple store, but the problem is that i don’t remeber my first apple id. Is there another way to make this reistall or to enter the another id? I would like to point out that I can’t do restart with a startup disk :)