Re: verification required on App Store:
If you have trusted iPhone or other device listed in your Apple ID,
you can generally get a verification code sent to it, and enter the code to verify that you are you.
We are all Apple users, like yourself. We have no access to your accounts or details.
See this article if your account has been disabled.:
Apple ID is locked or disabled - Apple Support
How to contact the App Store Support Team,
(There is a "Get Support" link (and a support app) at the bottom of their website (link below)
App Store - Official Apple Support