New MacBook Pro. I did a migration from old unit time capsule to new machine. Where do I find the username and password??

Move your content to a new Mac

On your new Mac

1. Select the information to transfer.
2. In this example, Michael Cavanna is a macOS user account. If it has the same name as an account already on your new Mac, you're prompted to either rename the old account or replace the one on your new Mac. If you rename, the old account will appear as a separate user on your new Mac, with a separate home folder and login. If you replace, the old account will delete and then replace the account on your new Mac, including everything in its home folder.

You are welcome and thank you too :-)

Do come back to the Apple Support Communities ( ASC )  in the future, if / or when additional questions may arise