How often should a normal person go pee?

No "normal" value. If you drink more fluids your kidneys eliminate the excess water to kep you in balance.So the more you drink the more you have to go, which also depends on your bladder capacity and your habit. Some people go when they have the slightest urge and others prolong having to go.There are medical conditions like diabetes with high blood sugar where you feel like going many times, ask your doctor.
Frequency. It really depends on how much fluids you drink. If you are dehydrated, you may only go 2-3 x a day, as your body tries to conserve fluid. However, some people go ever 2-3 hours. Average is around 4-6x a day.