What am I paying for?
I paying 99 cents for something. What is it?
Windows, Windows 10
No way for us here in this user to user forum to know.
Check your charges and subscriptions on your devices.
click here ➡️ If you want to cancel a subscription from Apple - Apple Support
Its possibly iCloud Storage, 50GB.
Click here ➡️ Upgrade to iCloud+ - Apple Support