On a twin set up how doe they counter rotate? Is one in forward and the other in reverse? Even though I'm shifting forwards one my shifter does one shift forward then the other shift into reverse? Is it different gears in the upper?

Yes there is a reverse gear and a forward gear. The shifter does act like you said.

Thanks I just never saw drives advertised as rh or lh got me thinking.

If you notice on the transome where the shifter cable goes to, on one side it is attached at the top and on the other it is attached at the bottom. So one side is running in forward and the other in reverse. some people say to swap drives every season so they wear evenly.

The drives are indifferent.

The rotation is determined by where the shift cables
are connected to on the shifter levers at the helm.