Author name. Title of Score. Edited by Name (if there is no editor, leave this part out). Place of publication: Publisher, year. (if there is no place, leave that part out; if there is no publisher and/or it was published online, say the year and then paste the url).
Specific score example:
Salfelder, Kathryn. Shadows Ablaze. Kon Brio, 2015. https://kathrynsalfelder.com/wp-content/uploads/2015/05/00-Shadows-Ablaze-Score.pdf
Hagenberg, Elaine. “About.” Elaine Hagenberg Music. Accessed March 15, 2019. https://www.elainehagenberg.com/index.html
Look for these things:
Vogel Library, Wartburg College | 100 Wartburg Blvd, Waverly, IA, 50677 | Phone: 319-352-8500 | Email: email@example.com