The 120 doesn't go to the Dover transit center. It only goes as far south as the Dover mall. See here: https://www.dartfirststate.com/information/routes/htmls/summer/rt120.html?date=1543359643313
Use google maps then click on transit as a mode of transportation. Enter the address that you're getting picked up from and the address you're going to and it will tell you what time the bus arrives and when you will get to your destination
At which location
Thanks! Your answer is awaiting moderation.