This Apple ID has not yet been used in the iTunes Store

I am a newbie to Apple. I have purchased a NOS 6S. I created my Apple ID and also updated to IOS 13.

When I attempt to download an app I get the following message:

"This Apple ID has not yet been used in the iTunes Store. Tap Review to sign in, then review your account information."

I tap review, enter my password and then nothing. The above message keeps repeating until I tap cancel.

I then select an app, tap get, tap install and then get the blue circle with done but nothing has happened. No download, no app.

I am presuming these two problems are related but have no info on what it is or how to fix it.