re: Installed but Not there, just files?

When I go to my site (https://www.gopiet.com/wp-admin/)all that is there are tons of Files down the page…the header reads: Index of /wp-admin.

What was done wrong that I need to correct?

I was blown away that I even installed it myself because I don’t even know what I am doing…so you must speak baby-talk to me (I followed Word Press directions for C-panel).

I feel like I am soooo close, but no cigar! Any & all help would be so much appreciated!

Thanks.

Kelly