If you have an iTunes or Apple Gift Card and want to use it for an Apple Music subscription, the process is straightforward. Because Apple has unified its storefronts, your "iTunes" gift card is now essentially an , which can be used for almost any digital service Apple offers.
After redeeming, check your balance immediately. On iPhone, go to Settings > [Your Name] > Media & Purchases > View Account > Account Balance . how to buy apple music with itunes gift card