How many arrows in archery are shot in a round?

Answer 1

There are a wide variety of quiver and arrow types. Most modern hunting quivers hold somewhere around five. Most medieval quivers were sized to hold between ten and fifteen, with an even dozen being the number most commonly alluded to in literature. Personally I have never seen one designed to be carried by a foot archer that would hold more than twenty. It would, of course, be possible to do so, but arrows tend to bulk up quickly, so the practicality is questionable.

Answer 2

as many as you like but usually depending on the size of the quiver about twenty