If you are not American, you need to have Context before seeing the Film.

Rating: 7/10 (20 August 2019)

Once upon a time in Hollywood .......
it's when this title comes on at the end of the film, is when you get it & it hits you the film so beautifully.
DO Not watch it if you are not aware of the Sharon Tate Murder or The manson family ( read up and then go watch the film).
I met friends outside the theatre in Mumbai, who did Not know anything about it & I assume most people outside the USA might not be aware of Sharon Tate or Roman Polanski for that matter hence had no idea of the case and were confused and lost Contextually about the Plot.
Luck for me, I had just finished watching Mind Hunter Season 2 and was refreshed about all the details about the infamous case and the haunting memory it holds in America.
This is in most probability going to be considered #Tarintinos most Indulgent and if i may be honest most Boring film and the most Unlike film he has ever made as an Auteur.
On a personal Note being an Actor in Mumbai & someone who is Obsessed with the 1950's & 1960's of USA , I admit i too was bored most of the first half of the film wondering what is he doing has he lost his touch or has he just made a bad film in which he has lost the PLOT !!!!
No.......... what he does is put you in an existential kind of a non Cinematic Universe of the life of a TV actor in that first half of the film and those times, he really puts you in there in that time on that street, in a home, in a movie theatre in the late 1960's in a way I think no other Filmmaker ever has..... least of all you would expect that from Quentin Tarantino as a Filmmaker, its very UN-Tarantino territory rather unique approach of the daily life in the 1960's of an Actor in Hollywood and then he shows how the Hippie Movement crumbles on its own idea.
There is a beautiful release towards the end thanx to both the leading men.......but I end this very personal review with the words,
#OnceuponaTimeinHollywood by #QuentinTarantino