Quentin Tarantino shuts down hopes he will direct his rumored Star Trek movie. Tarantino was one of several filmmakers who developed a version of Star Trek 4. The Pulp Fiction director worked on his Star Trek movie idea with screenwriter Mark L. Smith in 2018 and 2019 while Tarantino was filming Once Upon a Time in Hollywood. However, in January 2020, Tarantino decided not to pursue his Star Trek movie idea, although an R-rated Star Trek by Quentin Tarantino has been the subject of speculation ever since.
https://screenrant.com/quentin-tarantino-star-trek-movie-never-happen/