Hi smithalpk,
Welcome to the Support Communities! The articles below will explain how to check your Apple ID and iTunes billing information. Once you've done that, I would suggest downloading a free app from the iTunes Store. Then you will know if the issue is with your Apple ID or with the particular app you are trying to install. If the issue still persists, I'll include a link to the iTunes Store Support team as well.
Change or remove your payment information from your iTunes Store account (Apple ID)
http://support.apple.com/kb/HT1918
iOS: An app you installed unexpectedly quits, stops responding, or won’t open
http://support.apple.com/kb/ts1702
If your installed app won't open, download and install a free app that isn't on your iOS device. This should reset your Apple ID authorization.
Mac App Store: Buy, download, and install apps
http://support.apple.com/kb/PH11493
How to report an issue with your iTunes Store, App Store, Mac App Store, or iBooks Store purchase
http://support.apple.com/kb/HT1933
Cheers,
- Judy