How do I find the password I used when I set up my electronic signature?

I’m filling out a PDF job application. At the bottom is a line for my signature. I clicked on it and it came up with a pop up that said, “Sure you can sign this electronically, but we need a password first.” I set it up when I worked as a Realtor briefly, but haven’t a clue what password I would have used.

How can I find it, or can I make a new signature?