Gift card
I downloaded a gift card, could I please use that to renew my Apple Music subscription?
Question marked as
Yes, see -> App Store & iTunes gift card -> Gift Cards - Apple (UK)
See the Apple articles below:
How to redeem your Apple Gift Card or App Store & iTunes gift card
How to redeem your Apple Gift Card or App Store & iTunes gift card – Apple Support (UK)
Add money to your Apple ID balance
Add money to your Apple ID balance – Apple Support (UK)