You'll see Apple Music on your Verizon bill under Services. During your promotional period, you'll see your subscription start and end date, without a charge. When your promotion ends, you'll see a $10.99 charge* for each line that keeps an Apple Music subscription.
*After the 6 month promotional period ends, $10.99/month +tax applies unless you cancel the subscription. For NM residents, Apple Music ends automatically after the 6 month promotion.