There were probably more female prophets than those listed in the Bible, but they seem infrequent; multiple possible explanations exist.

Not every prophet and prophecy was written down, so there were likely more female prophets than those named. Still, female prophets seem infrequent. Possible explanations: women were busy with home/family duties, women were less respected so God called them less (though God called prophets people didn't listen to all the time), or God tends to prefer using men. All are speculation — no Scripture tells us why.