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. We cannot cancel or refund anything. 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
Also see: Request a refund for apps or content that you bought from Apple - Apple Support including the following:
If you or a family member bought an item by mistake, set up Screen Time to prevent unintentional purchases in the future. You can require a password for purchases, prevent some types of purchases, or disable purchasing completely. Set up Screen Time.