I use a rowing machine (or did when gyms were open), and I can't see how it could impact PSA.
However, I avoid exercise 24h before blood tests, and cycling a bit longer before PSA tests.
I had a bad creatinine level in a kidney function test. When I read up on it, advice was to eat no more than 100g of protein and avoid exercise 24h before. I'd done at 1200kCal cycle ride and eaten half a chicken. A retest without having done either of those came back normal.