Checking Hot Transmission Fluid through Drain Plug Hole Warning
The engine must be running when the transmission fluid fill plug is removed, or excessive fluid loss will occur. Transmission fluid may be hot. Since the actual fluid level is unknown, stand clear when removing the fill plug. Have a container ready to capture any lost fluid. Do not turn the engine off with the fill plug removed, as you can be injured by hot transmission fluid being expelled out of the oil fill opening.
Unless you have a lift to pick up the car evenly, not something you can do at home. Have a shop check it for you