FEI does all the big events. Vaulting, Driving and grand prix as well as eventing and dressage
I would google the show u want to watch and then the website livestreaming it should come up
A lot of times usef livestreams and there are a couple other websites that live stream big show
coth.com also does big events!
Check out tryon.com. They usually live stream their Saturday Night Lights shows.