apple music without credit card

You will need to either have a payment method or a sufficient balance on your account to cover what the first payment would be : Join Apple Music on your iPhone, iPad, iPod touch, Mac, or PC - Apple Support

When you first sign up for Apple Music, you can choose only one of these payment methods:

• Credit card
• Debit card
• Mobile phone billing (through supported carriers)
• Mobile phone service provider bundling (through supported carriers)
  Make sure to join Apple Music through either Apple or your mobile phone service provider, so that you're not charged by both.
• iTunes and Apple Music Gift Cards
  To use store credit to pay for Apple Music, you must have enough store credit to cover the amount of one billing period at the regular price of the Apple Music subscription that you choose. Learn more about how to redeem gift cards.