Is not out and about ahead of you (2,5)
I believe the answer is:
in store
'ahead of you' is the definition.
I know nothing about this answer so I can't judge whether this works.
'is not out and about' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'and' says to put letters next to each other.
'about' becomes 're' (common abbreviation for 'with reference to').
'is'+'not'='isnot'
'isnot' anagrammed gives 'insto'.
'insto'+'re'='IN STORE'
Can you help me to learn more?
(Other definitions for in store that I've seen before include "within retail site?" , "Sort of bakery" , "To come" , "Soon to happen" , "where shoppers are found" .)