hopefuly someone can tell me why vegeta did not use it, the form looks way to epic
Well firstly, the form is called Super Saiyan Blue Evolution and it is Vegeta's comparable form to that of Goku's Super Saiyan Blue Kaioken
As for why it wasn't in the movie, there is no definite reason as we don't see any comments from the staff with regard to the same. However, there are several reasons why this could be the case, for instance
- Due to the limited amount of time, there wasn't sufficient time to showcase as many transformations.
- Super Saiyan Blue Kaioken and Super Saiyan Blue Evolution weren't created by Toriyama.
- Keeping in mind the audience for the movie, it wouldn't have made as much sense if they had Goku and Vegeta use 2 random transformations and then fuse into Gogeta and use Super Saiyan Blue instead of the other transformations.
- Even from a story perspective, Vegeta and Goku weren't pushed to the same extent they were against Jiren. We don't know whether Vegeta can still tap into the transformation etc.
In the manga we see Mastered Super Saiyan Blue Goku/Vegeta fighting Broly and it was stated that the movie was a continuation of both the manga and the anime. So yes! There is no definite way to conclude why Vegeta didn't use the transformation apart from speculating based on some of the facts which I mentioned above.