How do I get my saved passwords from Firefox?

This freeware tool is what you want:

https://www.nirsoft.net/utils/passwordfox.html

Click on the Hamburger (three lines in upper right corner).

In the drop down Menu Click on OPTIONS

On the left side o Options select Privacy and Security.

Scroll down to Logons and Passwords.

Select Saved logons.  

That is where you can see your saved passwords.   Click on the little EYE icon to actually view the passwords.

 The Preferences/privacy-security menu is where most Browsers have them.