iTunes gift card balance check

Lat 240,

If the card was properly activated and has not yet been redeemed, it is worth the face value. Otherwise it is worth zero.

When you redeem an iTunes gift card, the full amount is immediately added to your account, and you can spend from the balance. Unlike some gift cards, there is not a running balance on the card.

If you want to check the credit balance on your account, follow the steps in here: https://support.apple.com/en-us/HT202359