Why has my password not saved & how do I find it?

So here I am, signing up to Disney+ & it asks me to create a password. I tell my Mac to suggest a strong password & it does. Great, I'm in. Now I'm going through the rest of the sign up process and, in order to access the full catalogue, I have to prove who I am.

"Enter password" it says.

Great.

But the password hasn't been added to my list of passwords so I don't know what is. Because what's the point in letting the machine create the strong password if it's easy to remember, right?

So what do I do.

More to the point, how do I get through the rest of the process without saying I forgot my password. Which I haven't obviously. I just have no way of finding out what it is.

This happens more often than I'd like to admit.

Why create a password & not immediately add it to my password list?

Sometimes, when I navigate away from a page, I get a prompt to save the password, which is always welcome but a tiny bit late because SEE ABOVE!!!

In any case, I tried navigating away & coming back & it didn't prompt me this time.

Any help would be appreciated. :)