When the elevator is mobing upwards but its slowing to a stop at the top floor. what is the direction of the net firce on the rider?

If an elevator is moving upwards but slowing down to stop at top floor then it implies that elevator is decelerating i. e. a net force is acting downward which opposes the motion.

N-mg=m (-a)

-a indicates that elevator is decelerating

where N=Normal reaction

mg=weight of rider

a=acceleration of elevator