Bypass the two-step verification process when no longer have access to linked phone number??
How can I bypass the two-step verification process when I no longer have access to the phone number linked to my Apple ID?
Question marked as
You can't. You need to update the number on your Apple ID.
See if anything here helps. If necessary, you can use account recovery as explained in the link at bottom of the article.
Verification code - how to get one and sign in with two-factor authentication.