Apple ID on my old phone used and I have a different number
I forgot the password to my Other iCloud and I have a new phone and my iCloud is set up on my old number so I can’t reset it.
Question marked as
You will have to use the Account Recovery Process, if you can't reset the password for your Apple ID.
Follow the steps in this article:
How to use account recovery when you can’t reset your Apple ID password - Apple Support