@pornofan By what I've read, it really depends on person to person, there's so much difference between one person to the other that it's hard to say with certainty. The refractory time is really person dependent, can be 1 hour, can be 12 or even more. Now to go back to full sperm count it's somewhere between 2-5 days. And around 1 week the body discards the old and replenishes it regardless of having came.
Now to my personal experience. Yes the more you abstained from sex/masturbation the hornier you get, I think most people work that way, but then again the sex drive is different to everyone, some people don't even have any. The cum amount definitely increases with time, I'd say for me is around 3 days to be the fullest. But sometimes only by being horny I already get a bigger load, so it's a combination of psychological and physical. So yeah, I think it's a lot person dependent, so you can't just say a specific number and call it a day, I think you should learn how your own body works.