6/10 for me, I thought it was decent for what it is, a mindless entertainment flick. It reminded me a lot of the 70s B-monster movies I grew up loving like the Godzilla, Mothra, etc japanese movies although I watched them via MST3K so watching them straight is... different.
I think it clearly demonstrates one problem for The Rock though. Without a comedian or action star to play up against, his performance is very flat and boring. I liked him in Baywatch, Jumanji, Central Intelligence, F&F, etc but here Morgan (Negan) doesn't really get enough screen time to do much with him, the CGI ape is, well, CGI and the female sidekick is a giant boring ass invisible character. I really hope his agent makes sure he always gets a strong co star to riff against, he really needs it.
Its also getting a bit weird that in every Rock movie now he has this platonic relationship with the female lead. Do chinese people not like to see The Rock fuck or something? I guess he is married in Skyscraper, hope he doesn't treat his wife like his sister.
The monsters were the real stars, when they were on screen together it was glorious. The bad guys were incredibly terrible. Worth a watch with moviepass, not worth spending real $$ on unless you LOVE CGI monster movies. I thought Kong Skull Island was slightly better but not much.