So this song has been played live by the Scott Pilgrim crew but the movie version 
isn't found on the soundtrack nor is it found on the score but it's ridiculously easy to play.

Guitar 1:
e|-------------------|
B|-------------------|
G|-------------------|
D|--6-6-6-6--9-9-9-9-|
A|--6-6-6-6/-9-9-9-9-|
E|--4-4-4-4/-7-7-7-7-|

Guitar 2:
e|-------------------|
B|-------------------|
G|-------------------|
D|-------------------|
A|--6-6-6-6/-9-9-9-9-|
E|--4-4-4-4/-7-7-7-7-|

Bass: (I don't actually know how this goes but I imagine it's just this.)
e|-------------------|
B|-------------------|
G|-------------------|
D|-------------------|
A|-------------------|
E|--4-4-4-4/-7-7-7-7-|

Just repeat these parts for 40 seconds.

Lyrics: C'mon C'mon! (Repeated)

/ = Slide
h = Hammer-On
p = Pull-Off