Ok So I think I've got the fluid where it needs to be. Color is light brownish red. Still won't go in reverse. Weird thing is I tried to put it in neutral to push it out of the garage and it won't move? Feels like it is in park, or that someone has their foot on the brake. Even weirder is that I can push the car slightly backwards in reverse but not drive in reverse? Thoughts?

 

The color of what you are looking at is based upon a mix of what you just put in, so we need to know how much you added to get it there. 1 Qt.? More, less? It will not effectively mix with all the contents in the Trans until it drives and moves fluid around in the Torque Converter.

When was the last time you pushed a 5000 pound vehicle anywhere? Carefully hook another vehicle to it and have them pull it out of the garage while you have the engine running and are behind the wheel of the H3 to apply the brake and steer to avoid any collisions etc.... If it will drive forward, drive it around the neighborhood kinda thing for a bit then check the fluid again by wiping the dipstick on a clean dry white paper towel or cloth. Then check reverse.

As I said in the beginning: A common sign of 460Le Trans Failure is the inability to shift into second gear or reverse. With your miles and lack of know Trans Service, you likely need a rebuild. If you have a broken Sunshell, it isn't going anywhere in reverse.