How to clean up these curves I got the following curve


But in edit mode it is ridiculous messy. 

It looks it's really small, but if i hit Ctrl+A (Apply) > Scale nothing will change.

Why does my Curve not apply the scale?
As Robin Betts says, Apply Scale does work for curves as well.

If the Normals length are bothering you, you can change the display in the N panel (3D properties) > Curve Display > Normal Size