How do I change my email for future receipt of invoices?
How do I change my email on my account for future receipt of invoices and communications?
iPhone 11 Pro Max, iOS 13
Question marked as
You need to change the email address of your existing Apple ID to the desired email address. Note the restrictions in the article.
Apple ID Name Change.
What to do after you change your Apple ID or password - Apple Support I suggest doing this before you change your Apple ID or password.