Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Roy, good day and thanks for your question. I understand that you are looking into a lost product key for a Microsoft product or service that you have.
Did you obtained this from your school?
If this is for Microsoft 365 that you have purchased, there is no product key involved not unless this is an Office product or suite.
If this is came from a school, you should be able to check or obtain the license from them if the Microsoft 365 or Office suite is not tied to the account that was created for you.