CAn't find Music folder to copy iTunes Media

I had to format my iMac and I ended up installing El Captain.

Now I need to copy my saved iTunes Media folder into a Music folder, but I can't find the music folder.

In fact, I don't see user name on the left bar in finder.

I checked in Systems Preferences if that user exist, and it does.

What do I do? I'm getting really frustrated with this...

Thank you!