Today, on September 13th, Bumblebee rolls out onto Netflix Canada! If you haven’t gotten a chance to see this fantastic film, never better time than the present! “Fleeing from the Decepticons in 1987, Bumblebee hides out on Earth. But after he befriends a sad teen, the battered Beetle’s foes are hot on his trail.” Netflix Canada in September 2019: What’s coming and going - Macleans.ca
As far as I know, only Canada. I don’t own Netflix (like for example) in the United States, so I couldn’t check on there if I wanted to.
Can confirm its not on Netflix US, and doesn't seem to have any indication of coming here. But who knows, maybe it will appear.
Netflix has to make a deal in each market (country) for any individual show or movie with the holder of the rights for it in that market. Most studios have preexisting distribution contracts in a number markets for their future releases that predate streaming service being a major money maker. So it gets complicated.
They had on the news last weekend that she's been offered the new hawk-eye role in the next phase of marvel movies.