I put wrong Apple ID when setting up husband’s computer. Nothing in sync noe

quasicorp wrote:

How do I change Apple ID on new computer

Sign out of the Apple ID— and try again

>System Preferences>Apple ID>Overview>Sign out

Set up your Apple ID preferences on Mac

Sign in to your Apple ID preferences on Mac

Might be easier to wipe it and start over, if you’ve used your Apple ID and merged ~everything of yours into the new install under the spouse’s preferred login username.

It’s certainly possible to create a second Admin login associated with the expected Apple ID, but… wrong name.

Erase and reinstall macOS - Apple Support