Recover email
How do I get my email address and password back? Accidentally deleted
iPhone 8
From the article below.
What happens if I change my mind after I have requested that my account be deleted?
While your request is being processed, you can contact Apple Support with the unique alphanumeric access code you received, and we’ll help you cancel your request. After your account is deleted, Apple can't cancel the request, reopen your account, or restore your data.
How to delete your Apple ID account - Apple Support