Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
This looks to be the Msft 365 Family subscription. If you click on "manage" you can cancel it if you don't want it.
You can also sign into your Microsoft account here: https://go.microsoft.com/fwlink/?linkid=2246882 You should find the Investigate charge option on the upper right to start the process, and select this charge to submit an investigation request to Microsoft billing support team.