You may be asked to submit your gift card number and gift card PIN to verify the balance. You can find these numbers and/or characters exactly as they appear on the back of the gift card. If you are unable to check your card balance online, please direct all inquiries to the merchant's phone number provided for gift card balance verification.How to check Apple balance?
Check your balance on your iPhone, iPad, or iPod touch. Open the App Store app. Tap your photo or the sign-in button at the top of the screen. You might be asked to sign in with your Apple ID. If you have a balance, the amount appears. If you don't see an amount, you don't have a balance.