Lost xbox account, don't remember email only GT

Yeah just try help from the Microsoft help/support team man maybe they can help you bro

Ya constestaron donde encontaras una liga para checar tu correo

You may want to also try this link here It's helped a few people. Maybe it will help you.

Hi Pathoofd,

Thanks for reaching out to us in the forums for this issue. If you've forgotten the credentials for your GT and wish to recover it, I recommend our Lost
Account Solution as a means to help you recover it. It'll take you through the steps necessary to get back into the account in no time.

Give a try and let us know the results.

I hope this helps you out!

It's always a good idea to link a different email and phone number to your account just Incase you gotta access your account or recover it.