Free church supporting vacuous talk-show - it's not worth much (8)
I believe the answer is:
twopence
'worth much' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'free church supporting vacuous talk-show it's' is the wordplay.
I cannot quite understand how this works, but
'free' could be 'open' (similar in meaning) and 'open' is found in the answer.
'church' could be 'ce' (Church of England) and 'ce' is found within the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
A single letter 'w' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'not' is the link.
Can you help me to learn more?
(Other definitions for twopence that I've seen before include "Penny plain, - coloured" , "bit of history" , "Not much money" , "Low-value coin" , "very little bread" .)