finding password for email account

Of course you needed to provide them beforehand with a recovery email address or phone number else where will they send you the new password to?

If you have Keychain set up you might have a symbol on the password field to choose the password stored in Keychain. It might also be in Safari, Preferences, Websites

Try to connect using Webmail (a very fancy term for surfing to your email account using a Browser) and use the "forgot my password" links provided by the web site.