Unable to redeem my Apple Gift Card on App Store
I got a free gift card after purchasing products online from Apple Store app but I couldn’t redeem it on App Store to add balance on my account
[Re-Titled by Moderator]
Review the type of Gift Card you have.
What type of gift card do I have? - Apple Support
They do have an Apple Store Gift card that is only used for purchases in a physical Apple Store or online at apple.com. This a different the any of the iTunes/App Store Gift Cards used to add funds to your Apple Account.