The first thing to say is that around two thirds of men your age have prostate cancer; getting prostate cancer is basically a matter of being a man and living long enough. Virtually every man will have it by his 80s if he lives that long. Most will require no treatment and will die with it, not from it. Getting it is normal, so don't be shocked!
Secondly, IF you do have it (and an elevated PSA is simply a flag that investigation is required), localised prostate cancer (cancer that's contained within the prostate gland) is an eminently treatable condition with excellent success rates. You get diagnosed, you get treated, and you get on with life. With a PSA of less than 10, IF you have prostate cancer, it's overwhelmingly likely to be localised.
So, DON'T PANIC. You don't know whether or not you do have prostate cancer (although the odds are about 2:1 in favour of having it at your age). If you have it, you get it treated and you get back to enjoying life. It's vanishingly unlikely to kill you. You just need to wait for the diagnostic process to grind its way through, and then you'll know where you stand.
I was diagnosed in 2018 at the age of 55. Had my treatment and here I am almost four years later enjoying life. Don't sweat it.
All the best,
Chris