I have a different Apple ID and I forgot password. I can’t reset my password from my phone because my other Apple ID is in the. I’m trying to set up a new computer

Hello demetria76,

It looks like you joined the Apple Support Communities from an excellent starting point; If you forgot your Apple ID password - Apple Support. Did you have a chance to follow all the guidance offered from that page? If so, and you're still experiencing the problem, you'll want to start the account recovery process.

Account recovery is an automated process designed to get you back into your Apple ID account as quickly as possible and deny access to unauthorized users. For your security, recovery might take several days or longer, depending on the verification information that you can provide. You’ll need to wait until the complete recovery of your Apple ID has taken place.

If you’d like more information on this process, you can look here: How to use account recovery when you can’t reset your Apple ID password - Apple Support.

We hope this information helps you out.

Kind regards!