Tied score of two (5)
I believe the answer is:
deuce
This clue could be a double definition.
'tied score' is the first definition.
'deuce' can be an answer for 'score' (I've seen this before). I am unsure of the 'tied' bit.
'two' is the second definition.
(synonyms)
'of' acts as a link.
Can you help me to learn more?
(Other definitions for deuce that I've seen before include "score, forty apiece" , "40 - 40 (tennis)" , "40-40 in tennis -- 2 in cards" , "Dickens" , "Two in cards or dice" .)