Answer: The reading on the scale will decrease as the elevator descend.
According to Newton's second law of motion which explains that the rate of change of the momentum of a body is directly proportional to, and in the same direction as, the net force acting on it.
In essence as a body moves towards ground, it weighs less and even weighs more upon impact with the ground.
If peradventure, the whole system is in free fall, you, the elevator and the scale will weigh nothing at all.