How to change apple ID while it has been disabled for security reasons
According to this Apple KB article, it may be a case of entering the password incorrectly too many times, in which case you can try resetting the password at Apple's iForgot site.

Another option, if you don't have any purchases linked to that Apple ID, is creating a new one using a different email address. You just have to sign out of the current Apple ID (if that's even necessary) and sign up for a new one. All of that is done from within Settings -> iTunes &amp; App Store, although the sign up process might be easier to do on a computer with a real keyboard, from within iTunes (Store menu -> Create Apple ID...)