I have two 20 amp breakers connected together with nothing else connected to those breakers. I have not had the electricity turned on but I am wondering why this was a done and what would happen if the electric was turned on and these two Breakers was still connected together?
I am going to presume that you mean the handles of the breakers are tied together.
This is the older method of creating a 2 pole, 240 volt circuit or a multiwire branch circuit.
If nothing is connected to them then nothing will happen when you turn them on.