Thanks Adam and Vincent, for your replies.
First, consider I have no real experience with AW other than reading.
I think I understand moves don't do harm. weapons and stuff do them as established in the fiction.
Sometimes, not always, moves can help adjudicate how much harm is being dealt or exchanged in any given situation.
Is that correct?
In order to better clarify my doubts I will put into consideration 4 situations:
Our Outlaw Heir's (lets call him Rossyll Crow) weapon of choice is the Long Bow (does 4-harm, at distance):
a) He is pulling his bow at some men-at-arms (with only melee weapons) charging at him from 50 yards, across the bridge. They are but seconds away. How many arrows will land true before they arrive?
b) He is pulling his bow at some men-at-arms trying to kill him, but they are crossing a ford from the other side, that will probably take a few minutes from them to cross to this side.
c) He is pulling his bow at a some men-at-arms coming to arrest him, but our hero can shoot safely from a tall tower window, which iron locked door is not readily accessible to his foes. They have a choice to try to force the entrance, which can take a long time, or run to the forest cover, which is half a mile away. It was a trap!
d) he is pulling his bow against a few men-at-arms which are already engaging him in melee. Our friend's Rossyll´s Fate isn't looking all that bright. I hope he still have more to do before he dies.
How do we adjudicate those? Which moves apply, if any?
Edit:
If they'll let you, you should hang out at range and shoot arrows at them all the rest of the day.
Yes that seems fair enough, but how to determine the damage, or even if they hit at all? It's still
going into battle with no harm as established from the NPC?