Hello lynna83,
Welcome to Apple Support Communities!
If we understand your post correctly, your getting a message in the App Store that your Apple ID has not yet been used in the iTunes Store with is preventing you from downloading any apps. We're happy to help!
You'll need to go in and update your payment information in order for that message to be removed.
Enter your credit card and billing information, then tap Next. You can also choose None, and learn what to do if None isn't showing or you can't select it. You will not be charged until you make a purchase. You can change or remove your payment details later.
After doing the above task go back to the iTunes Store and see if you're now able to download apps. If you're still not able I recommend contacting Apple Support directly for further help on this issue.
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Let us know if you have any questions.
Thank you for using Apple Support Communities.
Take care!