Thanks!
Here's something interesting I stumbled across by Googling, a dissertation for a Phd in Musicology:History at Michigan:
The dissertation has a number of score excerpts with commentary. She has a note on sources:
The Sibley Music Library of the Eastman School of Music holds the collection of Alexander Courage, the first composer for Star Trek and the writer of its iconic main theme. The Harold B. Lee Special Collections Library at Brigham Young University holds the collections of composers Fred Steiner and Jerry Fielding. The American Heritage Collection at the University of Wyoming holds score sketches by composers Gerald Fried and Sol Kaplan. The University of Southern California Cinematic Arts Library holds the scores of George Duning, and the Performing Arts Special Collections Library at the University of California, Los Angeles, houses the copious collection of Star Trek creator, writer, and producer Gene Roddenberry. I was also given access by CBS to a portion of their Star Trek music library in a visit to their Los Angeles offices in 2014. Through the materials found at these archives—and through additional material provided by the American Federation of Musicians Local 47, BMI, and the personal collection of Jeff Bond—I have access to sketch and full scores, cue sheets, intra-show communications, musician and composer contracts, and in-depth personal interviews with the series’ musical team.
I interacted with a user named Gottacook several years ago on some forum, I think it was AVClub, who had browsed the Duning Trek scores at USC. He(?) was a big admirer of Duning.
The videos on
Shem von Schroeck's Youtube channel have extensive excertps from the scores – and transcribed for piano!
Point being, the material exists. Don't think it's ever been published, though.