Rather than how many clicks per revolution of the knob, a more useful thing to know is how much does the target quantity change per each click?
From memory I think Airbus FBW is as follows, (but will check next time I fly):
SPD 1 knot or 0.1 Mach per click
HDG: 1 degree per click
ALT: 100' per click or 1000' per click depending on the setting of the scale selector
V/S: 100' or 0.1 degree FPA per click