How much water did you pour in? You need to try at least 10-15 gallons before you give up.
Sta-Rite MSE is a very high quality pump, I would say you have a deep well. If you do get it prime it's a strong possibility that trash will get in the jet from sitting so long and it will have to be pulled. If you get it pumping but only get ~30 psi then the jet is plugged.
To prime faster pull the 1/4" plug out of the bottom of the pump and pour the water in where the gauge goes. If there is a discharge block valve close it for the start-up, MSE's can be tricky to get started and sometimes start better with the pump isolated from the tank. Once running set the regulator at 60 psi while the pump is running. The gague shows jet pressure when the pump is running, you'll only see tank pressure when the pump is off.