Why my gift card don’t working?

Do you get any error message?

See -> Related Article: If you can't redeem your Apple Gift Card or App Store & iTunes Gift Card

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Card is not valid

Card has already been redeemed

Card is not activated

Code is unreadable

Code must be redeemed in a different country or region

• You can't redeem Apple Gift Cards or App Store & iTunes Gift Cards outside the country or region of purchase. For example, if you bought an App Store & iTunes Gift Card in France, you can't redeem it in the App Store in the United States.

Contact Apple Support -> Contact Apple Support.

Beware of -> About Gift Card Scams -> About Gift Card Scams - Official Apple Support