My Apple account Says that it is not registered on Apple store and iTunes .. what can I do to fix it?
Click on this link to find out how to 'Sign in with your Apple ID' --> https://support.apple.com/HT201762 "After you log in, you can use the App Store, iCloud, iMessage, Apple Music, Apple TV+, and more."
"When you sign in with your Apple ID on your iPhone, you will be signed in to the iTunes Store, App Store, and Apple Music automatically so that you can make purchases or begin using Apple Music quickly and easily."
From: Apple ID & Privacy - https://support.apple.com/HT208650
Maybe it needs a payment method?
This document explains how to 'Change, add, [review,] or remove Apple ID payment methods' on a Mac or Apple mobile devices; click here --> https://support.apple.com/HT201266
Change your Apple ID payment method if you don't have an Apple device --> https://support.apple.com/HT210755 - PC, MS Surface, Android, Chromebook, online at tv.apple.com
'If you can't remove your last payment method or use no payment method with your Apple ID' click here --> https://support.apple.com/HT203905
- If you are updating an old card and have ongoing subscriptions you may need to first add the new card and make it the primary payment method before deleting the old card.
If you still have problems, click here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.
Contact Apple for support and service --> "See a list of Apple phone numbers around the world." - https://support.apple.com/HT201232
'Payment methods that you can use with your Apple ID' --> https://support.apple.com/HT202631
'If your payment method is declined in the App Store or iTunes Store' click here --> https://support.apple.com/HT203005
I can’t click on it ,maybe you should try resending it or resend another one
Tap or whatever. They are just standard web browser links and should open a new tab in a web browser.