Karl is right. You "shouldn't" have any water in the hull, but in reality, most boats do.
You will know if it is too much.
If you pull the plugs and a cup full, or maybe half gallon in a boat comes out, you shouldn't worry much.
But if you look in the engine bay and see water up to the starter or drive shaft, start freaking and figure out where it is coming from.
So, how much are you getting?