Bishop perhaps about to dip into church collection (7)
I believe the answer is:
prelate
'bishop perhaps' is the definition.
(a bishop is an example)
'about to dip into church collection' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'to dip into' is an insertion indicator.
'church collection' becomes 'plate' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
're' placed into 'plate' is 'PRELATE'.
Can you help me to learn more?
(Other definitions for prelate that I've seen before include "High-ranking member of clergy, say bishop" , "Senior churchman" , "Church high-ranker" , "Bishop perhaps" , "priest" .)