Hello, thank you for reaching out to Microsoft Q&A.
Did you forget your Microsoft Account e-mail address?
If yes, use your alternate security information to view the partial email address of your Microsoft account. Try to recall the full address from that partial hint, or ask your friends or neighbors to look up your email address in their contacts. If you have sent them any email, they can find your address in your previous messages. You can also check whether you’ve saved the account details in your password manager.
Forgotten your Microsoft account username
For Password Resets,
If this is a personal account, please use the following link to reset the password: https://account.live.com/ResetPassword.aspx