How to cancel my account

For information about how to delete an Apple Account (formerly “Apple ID”), read this support article —> How to delete your Apple Account - Apple Support

Carefully and thoroughly read that article for information about what happens when you delete your Apple Account. For example:

"Make sure that you sign out of all your devices to avoid issues with apps that use your Apple Account or iCloud. After your account is deleted, you can’t sign out of iCloud or turn off Find My iPhone Activation Lock on your devices. If you forget to sign out, you might not be able to use your device when your account is deleted."

You may also be interested in How to deactivate your Apple Account - Apple Support

That way should you decide you do need your account after all, you can request it be reactivated. You cannot have a deleted account reinstated once it has been finalized.

Hello~ Cancel your Apple Account? First… make sure that’s what you really want to do and click on below and review…

How to delete your Apple Account - Apple Support

Please read through carefully because at some point this can’t be reversed.

If you mean something else then add more details.

~Katana-San~

This explains.

How to delete your Apple Account - Apple Support