For cover, you need the right money (4)
I believe the answer is:
roof
'for cover' is the definition.
(roofing is a kind of covering)
'the right money' is the wordplay.
'the right' becomes 'r' (common abbreviation).
'money' becomes 'oof' (I can't explain this - if you can you should give a lot more credence to this answer).
'r'+'oof'='ROOF'
'you need' acts as a link.
Can you help me to learn more?
(Other definitions for roof that I've seen before include "Mansard is an example of one" , "One is angry when one hits it" , "Top covering of structure" , "Upper limit; house top" , "Protective covering on top" .)