Cant check balance on my gift card

Hi Richk121

Welcome to the Apple (user-to-user) Community.

Re:" I can't get the check balance to work on my gift card"

Wondering if you have redeemed the gift card so it will appear:

How to redeem your Apple Gift Card or App Store & iTunes gift card - Apple Support

For Apple Store gift cards:

Check your gift card balance – Apple Support

For App Sture / iTunes Gift Cards

Check your Apple Account balance – Apple Support

All the best :-)