Yes you will need to file a PR return. Depends on what you sold as to where you report it on your 1040 (main home, rental, investment). I believe you have to file PR as a mail in, but I am not positive. Here is a link for PR information. 

chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://hacienda.pr.gov/downloads/pdf/folletos/planillas_ingles.pdf