Unable to download apps

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

Contact Apple Support for help.

If you see a message that says "Your account has been disabled in the App Store and iTunes," there might be a problem with the payment method that you have on file.

When you see the message, don't try to edit any of your account information. Instead, contact Apple Support for help.

If you see a message that says 'Your account has been disabled in the ...

https://support.apple.com/en-us/HT208856

You may get better and prompt responses if you may kindly provide the iPhone Model that you have and the iOS version if it is known to you.