I'm not impressed by technology backing everyone to score (5)
I believe the answer is:
tutti
'everyone to score' is the definition.
I can't tell whether this defines the answer.
'i'm not impressed by technology backing' is the wordplay.
'i'm not impressed' becomes 'tut' (I can't justify this - if you can you should believe this answer much more).
'by' means one lot of letters go next to another.
'technology' becomes 'IT' (Information Technology).
'backing' says the letters should be written in reverse.
'it' in reverse letter order is 'ti'.
'tut'+'ti'='TUTTI'
Can you help me to learn more?
(Other definitions for tutti that I've seen before include "Piece of music for the whole orchestra" , "when everyone plays" , "Passage using all instruments" , "With all playing together (music)" , "For all of 7 [ORCHESTRA]" .)