Achieving getting church very hot (9)
I believe the answer is:
scorching
'very hot' is the definition.
(I've seen this before)
'achieving getting church' is the wordplay.
'achieving' becomes 'scoring' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'getting' means one lot of letters goes inside another.
'church' becomes 'ch' (common abbreviation).
'scoring' enclosing 'ch' is 'SCORCHING'.
Can you help me to learn more?
(Other definitions for scorching that I've seen before include "Moving very fast" , "Burning superficially" , "Very hot" .)