How often will it fruit?
It should cycle on and off fruiting every couple of weeks. Sometimes you may have the odd shroom popping up randomly, but if you have it in a good environment it should have a fairly consistent cycle, producing over a half dozed mushrooms at a time. This followed a couple of weeks or so being dormant. However, being nature your mileage may vary.
If it’s been a while since it last fruited you might need to put it in the refrigerator for a few days and give it a soak.