How do I cancel my subscription

View, change, or cancel your subscriptions - https://support.apple.com/HT202039 - "Learn how to view your subscriptions that renew automatically, change your subscription period, and turn off Automatic Renewal." "If you don’t cancel more than 24 hours before your renewal date, your subscription might renew."

How do I cancel my Subcription to Apple mu

If you mean Apple Music follow the instructions in the link in Limnos's reply