Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Typically, your Microsoft account at https://account.microsoft.com/services will give you details about the product. It could be a trial subscription that you forgot to cancel on time.
For further assistance, see https://support.microsoft.com/en-gb/account-billing/how-to-investigate-a-billing-charge-from-microsoft-398c5328-364c-d5e4-ea8f-f5ad60562a93 .