Why are the damegless runs so short

The damageless runs are a "highscore" category, where the whole premise is to get as many stars/shines as you can without taking damage, not about time.

OK but why ar thay just in the milliseconds I didn't think good players would take damage soo fast

The number of stars/shines collected before taking damage is put into milliseconds.

Oh ok

I still done truly understand but I will watch a run​