For parking, on some days, you give a fee (3)
I believe the answer is:
pay
'a fee' is the definition.
(thesaurus)
'for parking on some days you' is the wordplay.
I cannot really understand how this works, but
'parking' could be 'p' (abbreviation on road signs) and 'p' is found in the answer.
'some' could be 'a' and 'a' is present in the answer.
A single letter 'y' remains which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
'give' acts as a link.
Can you help me to learn more?
(Other definitions for pay that I've seen before include "Remunerate" , "Financial reward" , "Salary, wages" , "Reward for work" , "Hand over money for" .)