Indicates there’s nothing in a few beers (6)
I believe the answer is:
points
'indicates' is the definition.
('point' can be a synonym of 'indicate')
'nothing in a few beers' is the wordplay.
'nothing' becomes 'o' (looks like zero - 0).
'in' means one lot of letters goes inside another.
'a few beers' becomes 'pints'.
'o' placed into 'pints' is 'POINTS'.
'there's' is the link.
(Other definitions for points that I've seen before include "Precise locations" , "Directions on compass" , "Indicates a direction" , "Railway track with two movable rails" , "Decimal dots" .)