How can we find out gmail profiles?

Not sure what you are asking?

If there is a gmail home page, and there is not an option to "search", or "view" profiles, then the answer would be you probably can't.

If you are searching for a person with a gmail address, you can try some of the on line email search options.

There are many available, just Google "find someone's email address".

Gmail is a web based e-mail system and DOES NOT have profiles like Yahoo and MSN.