Go about two? (6)
I believe the answer is:
repair
'go' is the definition.
(I've seen this before)
'about two' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'two' becomes 'pair' (pair is a kind of two).
're'+'pair'='REPAIR'
(Other definitions for repair that I've seen before include "Restore; go" , "Restore, set right" , "Get back into good shape" , "resort" , "service" .)