Avoid a very low score (4)
I believe the answer is:
duck
This could be a double definition.
'avoid' is the first definition.
(duck can mean to avoid)
'a very low score' is the second definition.
'duck' can be an answer for 'score' (duck is a kind of score). I am not certain of the 'a very low' bit.
Can you help me to learn more?
(Other definitions for duck that I've seen before include "nothing" , "Water bird - get out of the way" , "Cringe maybe" , "Love" , "cricketing failure" .)