Regex for specific sublayer content

I’ve been wondering if there is an expression in Regex that would help me to include the text in a specific layer to the “Rename Layer” command.
What I want to do is:
I have a badge, where I put the user’s name in a sublayer named “#Label” and I use it in various designs (frames), each time with a different user’s name.
Now, I want to change the name of the frames using Rename Tool to e.g. IG-Stories-UsersName, where UsersName would be a Regular Expression for the text value of #Label.
Is there any way to do that? :))