iTunes Store and App Store

Why not? What happens when you try to log in? Do you get an error? If so what does it say?

If its says your account is disabled, see here: If you see a message that says 'Your account has been disabled in the App Store and iTunes' - Apple Support

See here: If you can't connect to the App Store, iTunes Store, or other Apple services - Apple Support

Note that there is currently an issue with the App Store that may be preventing the log in.

https://www.apple.com/support/systemstatus/