Hi James -
I often get the question, "What is the actual score I need to pass the PMP Exam? PMI could tell us, but they would have to ... Think Top Gun.

I have heard 62.5%, 65%, and 67%. So, how do you know when you are ready to sit for the actual exam? This is where the OSP International PMP Simulator comes in. I recommend taking a complete 3-hour and 50-minute, 180-question practice exam each weekend. When you take your first practice exam, you will fail miserably. I scored 37% correct on my first practice exam

But this is just a baseline. As you take more of these full 180-question practice exams, your score will continue to go up. When your score is 75% or higher on one of the OSP PMP Exam Simulator Practice Exams, you are ready to sit for the actual exam. I'm not sure which simulator you're using, but if it's not the OSP International PMI-ACP Simulator, the following link provides a 7-day free trial so you can view its functionality.
OSP International Free PMP Simulator - 7 Days of Access / 69 Questions
Happy Studying!
Professor Kevin