Hey!
In virtual lab you normally don't need to stay hidden or do things quickly, so its a good idea to scan all ports (in nmap that's -p- or -p1-65535). Also don't forget to scan UDP ports.
I see there is tcp port 80 open. Did you check what's there? You can start with the browser and see if there is any web app (you can check for the usual folders like /phpmyadmin, /administrator, /uploads etc.). If you don't find anything you can try to brute force folder names with tools like wfuzz (cli) or dirbuster (gui).
As white-knight mentioned, HTTP (usually 80) and FTP (usually 21) are a good place to start and both seem to be open in your case, so check these first and see if you can find any information that will help you with other services.