How much should a 5' 2 woman weigh that is 36 years old?

130-160 lbs, I would estimate.

If you are concerned about obesity, then you should check this website out. http://www.nhlbisupport.com/bmi/bmicalc.htm It doesn't matter on age, I dont think but for you height 5'4" and your frame.... small frame 114-127 medium frame 124-138 and large frame 134-151