I think that the Revenge comes factory set with a 29" draw length. If you ordered it on-line, then it should be set at 29". Fortunately this design has a cam with a standard adjustment range from 24 1/2 inches to 30 inches. If you can draw the bow, but not break over the cam action, then the draw length needs to be reduced to your measurements. You can get a ropugh idea of the draw length by placing a yard stick on the rest, holding the rear end pinched between your thumb and index finger. Then draw back as you normally would. Where the yard stick measures to the front of your riser hand is a rough estimate of your draw lentgh. May have to put the bow in a bow vise to adjust the draw length.
If , however, you cannot get the bow started back much at all, then it is set way beyond your upper body strength. There should be instructions in the manual about how to safely adjust the draw weight. Usually the instruction is to screw them in to the max then back off "X" number of turns, about 1/4 turn at a time until you can draw the bopw comfoprtably. The booklet should also list the max number of turns. If you do not have the manual, I'd caution you about messing with the pull weight adjustments. As already mentioned, you get the adjustment bolt at the end of the threads and you'll be in for a mess for sure .. and possible injury.