So you are accelerating at 32.174 ft/sec^2 when you are standing on the scale?
The FORCE is the amount of force required to STOP the acceleration. There is no acceleration at that point while standing on the scale.
The acceleration is continuously increasing as you are "free falling" towards the Earth, because you are continuously getting closer to the Earth as you fall, so the acceleration increases.
When the acceleration is zero, so is the force, according to Newton's F=ma.