Yes indeed. I’m probably making too fine a distinction for some to parse, (-: but after three decades in and around Hollyweird Show Biz, I’m used to “completed screenplay” meaning “it has all its pages, and goes all the way to the end”, versus a “finished screenplay”, which is the final shooting script (but note contrast with “final version,” which also incorporates all the multi-hued revisions written and inserted during production).
There’s often a gap of months or years between “completed screenplay” and “finished screenplay,” and the latter sometimes bears only the vaguest resemblance to the former. (-:
