Exactly. This question is like asking "what powder charge should I use in my gun?" We have no idea what the gun is.
OK...I have KO2’s and run 70 in the back, 60 in the front. But I suspect I have different truck and size/load rating KO2’s than you.
Looking for blanket recommendations on what pressure to run your KO2’s at without any info on tire size or even what vehicle they are going on is not going to get you much. If they are the same size and load rating as the factory tires, the sticker on the door jamb is a good place to start.