Hes worth a shilling (3)
I believe the answer is:
bob
'shilling' is the definition.
(I've seen this in another clue)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for bob that I've seen before include "money once" , "Short cut" , "Set of changes" , "Brief curtsy - hairstyle" , "-- Dylan, singer" .)