Maybe two for one in Bury (7)
I believe the answer is:
integer
'maybe two' is the definition.
(2 is an example)
'for one in bury' is the wordplay.
'for one' becomes 'eg' (I've seen this in other clues).
'in' indicates putting letters inside.
'bury' becomes 'inter' ('inter' can be a synonym of 'bury').
'eg' put inside 'inter' is 'INTEGER'.
(Other definitions for integer that I've seen before include "Get Erin (anag)" , "A whole number, not a fraction" , "Whole unit" , "Treeing (anag.)" , "one or two, perhaps" .)