What you might call Elon Musk’s remuneration? (9,6)
I believe the answer is:
telephone number
'musk's remuneration?' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'what you might call elon' is the wordplay.
I cannot really understand how this works, but
'you' could be 'one' (I've seen this before) and 'one' is found within the answer.
'call' could be 'tel' (short for telephone) and 'tel' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for telephone number that I've seen before include "that may be kept in cell" , "Very large figure" .)