Really very simple follow following steps after logging in to your account
1. click the profile tab
2. Go to profile info and click summary
3. go to url "https: on the top
4. you can see a 7 numbers that is your bitcoin talk user id.
If you need bitcoin talk user profile just copy the "https: up to your user id like this
https://bitcointalk.org/index.php?action=profile;u=123456.
Important is not to copy the word summary from the hyperlink
you are good to go
I entered profile but I dont see any numbers either in the address or on the webpage.