How do I find someone's profile????

I'm sorry if this question has been asked before, but I'm genuinely shocked with how hard this is. In the description, the person who uploaded the thing I'm reading says that I can find more on their profile, but... Where is their profile? There's a few things in the details that look like they can be profiles, but I have no idea which one it would be, and regardless, none of it is clickable. What do I do?