Check back to the well and see if you have any water there.
It's going to be a matter of seeing where you have water or don't then fixing the problem where ever and what ever it may be.
The well pump may not be working or, you may be frozen, more troubleshooting is needed.
As far as Heat Tape I highly recommend Frostex Pipe Freeze Protection System
as it is the easiest to install, most reliable, and best controlled heat tape on the market today...