Speaking personally, why I need the film script (3,2,4)
I believe the answer is:
for my part
'speaking personally' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'why i need the film script' is the wordplay.
I cannot really see how this works, but
'why' could be 'y' and 'y' is located in the answer.
'i' could be 'a' and 'a' is present in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
'film' could be 'm' (1931 Fritz Lang film) and 'm' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for for my part that I've seen before include "Personally" , "As far as I'm concerned" .)