Only an extremely poorly-written program will provide a way to view its own stored password1, as this is a major security risk. If you could view your saved password, then it could also be accessed by a remote user over the network.
Since your password is currently saved in Steam, the best course of action is to first verify that the email address associated with your Steam account is one to which you have access, then do a password reset, and remember what you change it to.
1 While it is true that browsers allow you to view the passwords you've saved for websites, they do not allow you to view the password used to log into the browsers themselves. This is what I mean by "its own stored password".