What is the charge of $5.53 I'm being charged every month for?

See information in How to cancel a subscription from Apple - Apple Support (you can view as well as cancel subscriptions using those instructions).

If that doesn't resolve the issue, be aware that this is primarily a user-to-user support forum; other Apple users like you. We don't have access to information about charges to your account. See each of the steps in the following instructions. They include information on contacting Apple Support if the other steps don't help: If you see 'apple.com/bill' on your billing statement - Apple Support