I need to connect my iPad to iTunes.

I’d like to help. Could you please offer more detail of the problem? Is there an error message? If it says your account is disabled in iTunes you will need to contact apple to be able to unlock it.

If you see a message that says 'Your account has been disabled in the App Store and iTunes' - Apple Support

Check the network connection:

You need to have a good Wi-Fi.

If they are On, turn Off Hotspot & VPN.

Charge the battery > 70%.

See also If you can't connect to the App Store, iTunes Store, or other Apple services

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

-> If you tried all of the above steps and you still can’t connect, contact Apple Support.