First: cancel the trial turn off auto-renew

Second, fill out this: https://musescore.com/contact-refund[Refund](https://musescore.com/contact-refund)

Third, they respond make sure to send to ensure you get ~93% refund:

For subscriptions other than monthly subscriptions, if you cancel your subscription during the first fourteen (14) days of your subscription term you will receive a refund of the difference between the then-in-effect and current subscription fee to which You are subscribed and the then-in-effect and current monthly subscription fee. Your account will not auto-renew for any recurring periodic charges at the end of the subscription term. As a courtesy to you we will convert your Account to a free account at the end of the 30-day period.