Not a doc, but,
I can't really tell you what "Free/Total P S A [F/T PSA] >0.00 % >25.00" means, but it might just be a guideline like IF Free/Total P S A [F/T PSA] >0.00 % >25.00 THEN 55% PROBABILITY OF PROSTATE CANCER.
Doesn't matter, we know he had prostate cancer.

I'm assuming this is just a lab report of a blood sample.
We know he had prostate cancer, the testing / reporting system might not be different for those already diagnosed (mine is, Labcorp). It might be the same reporting as if he hasn't been diagnosed as of yet. If his psa is currently less than 0.10 I'd say things are looking pretty good, it depends on how high his PSA was at the time of surgery. I'm fairly certain my surgeon said PSA has a half life of 3 days. The important thing is that it doesn't start to trend upward.

It also appears he's not getting the ultrasensitive PSA test, there are arguments for and against this, but, it can help determine early if the PSA is rising again at an earlier point in time. For example, my reports don't go into the < category till the get to the 0.00X level.

As an example, my PSA was 13 at the time of my surgery and went down to < 010 at around the four month mark, which looking at my records, might be the first time I had a post RP test.
07/20/21 13.8
9/2/21 Surgery
01/26/22 0.039

best of luck to you! Hopefully someone will have a better answer on exactly what that line means.