When we were just getting started, I had a reading of 10.7 (this was when I was 39.5 - we had tried for a year on our own before seeing an RE). This number had RE#2 telling me I'd probably never have a baby with my own eggs (he had the "your highest fsh is your true fsh" idea). Most other cycles I tested between 5 and 10.
It has been three years since that high reading, and I haven't had my fsh tested in two years, so I'm not sure where it might have been recently.
ETA: I was an incredibly poor responder during ivf, so even though my fsh wasn't terribly high while cycling, I only got 2 or 3 eggs even on the highest stims (super high, like 900iu) and each time ended up with just one embie to transfer.