Printed scores of popular music, can be likened to secondary materials. They are typically arrangements of an artists(s') work(s), not copies of the manuscript scores (urtext editions). However, printed scores of sheet music can assist you in musical analysis by providing written text.
The following list is not exhaustive, rather it provides you with a point of departure for your research.
Check call number M 1630.18 (Popular music); it is located on the second floor of the Music Library.
Search via keyword, title or subject. If searching by title or keyword, make sure to limit your search to "Music Scores (sheet music)".