According to the Wikipedia page
Several minutes of test footage, including a view of a redesigned Engineering Room, costume tests with crew, screen test footage of David Gautreaux as Xon and costume test footage of Persis Khambatta as Ilia, were included in a featurette on the DVD release of the Directors Edition of Star Trek: The Motion Picture.
Also on the same page
Although the series was never filmed and is thus not considered part of the Star Trek canon, several sources, such as the Star Trek Chronology, acknowledge the basic premise of the series, and have Kirk conduct another 5-year mission after the events of Star Trek: The Motion Picture.
So, no full episodes, but some test footage.
With regards to the scripts for Phase II:
Two scripts for the series ("The Child" and "Devil's Due") were rewritten for use in Star Trek: The Next Generation due to a Hollywood writer's strike. "Kitumba" and "The Child" were filmed as episodes of the Star Trek: Phase II fan series.