Parris says, "Oh, Abigail, what proper payment for my charity! Now I am undone!!" What does that mean?

Parris is upset that Abigail has been caught dancing naked in the woods. Parris is Abigail's Uncle and guardian. Her witch-like shenanigans in the forest reflect poorly on Parris as the reverend of the town. All this "evil" is happening directly under his watch. Parris fears for his job and stature in the town.