Gift card vs apple cash
Bought iTunes gift card thinking it was apple cash. How do I convert gift card to apple cash?
What is 'apple cash' ?
If you've bought an iTunes gift card you can redeem it onto your iTunes account and it will be used for your purchases from iTunes (iTunes, Apps Store, Boosktore, Mac App Store) : Redeem App Store & iTunes Gift Cards, Apple Music Gift Cards, and content codes - Apple Support