How are you doing in preparation for the PFT?
This site has a great, simple calculator to give you a PFT score: USMC.PFTcalculator.com. I know it helped motivate me to work out to see how much one extra pullup or a few seconds off my run would help my score. Set some goals to help you work out!
It also includes a link to the Body Fat Calculator, if that’s an issue for you as well.