Scored 100 on (4)
I believe the answer is:
aced
'scored 100 on' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aced that I've seen before include "passed with highest marks in US" , "Sailed through" , "Reached a golf hole in one shot" , "got a hole in one" , "Comprehensively beaten" .)