I need to activate my iTunes account and Apple ID

Click on this link about 'How to deactivate your Apple ID account' --> https://support.apple.com/HT208503

- See the section about "Can I reactivate my account?"

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

If this is with reference to an error message it would help to know what it says.