I think it is a solid 8.5/10. It is the best one after TDK, however this movie pays the most respect to Batman himself. Robert Pattinson did a great job and his Batman is by far the most comic accurate. This movie as a whole did a great job of adapting aspects of The Long Halloween, Zero Year, and others, while still telling an original story. 90% of his scenes is AS Batman which is a nice change of pace. Especially in his early years, the Bruce Wayne persona was almost nonexistent. Batman actually saves people and cares about human life, which is the only one aside from Christian Bale's version. He becomes a real hero by the end of the movie. He has a brain and solves crimes using said brain.
This is by far the best version of Gotham ever seen in a movie. It is the perfect mix of over the top gothic Tim Burton and then a little too realistic literally just New York, Christopher Nolan version (Batman Begins had a much better Gotham than TDK and TDKR, but nothing compared to The Batman).
The movie shows that there is an established universe, Gordon and Batman already having a working relationship, Penguin is rising to power, Batman meets Catwoman, but there is still much more to show.
People have given Pattinson crap for how he looks, which is very stupid. As someone with a lot of natural lifting experience who holds 2 state powerlifting records, he looks very realistic to how this character would look IN REAL LIFE. For someone who isn't taking steroids, gets almost no sleep, trains more for speed and technique rather than all traditional weight training, and overall has trash recovery for his body, they aren't going to be huge at all. He could bulk up a little bit and still fit the part, which I imagine he will. Building a ton natural muscle takes more time than people think, especially since Pattinson is one of the only mainstream actors in superhero movies that don't take steroids. Henry Cavill, Chris Pratt, and Chris Evans are the only other actors in these movies that I believe aren't on shit. They have been lifting for decades to look like that, and they still get absolutely blown out of the water by Chris Hemsworth for example who will literally gain and lose 30 lbs of muscle between Thor movies when he is off his cycle. This overly long explanation is just to break down why a relatively new lifter like Robert Pattinson's physique is just fine for the more grounded version of Batman that he is playing, and if there was a Batman IRL who was nocturnal and fighting every night, and wasn't on roids, he would look like shit and be almost completely emaciated.
Rant about why this new Batman is much better than Affleck's version that nobody in their right mind would take the time to read:
I like Affleck's portrayal of the shitty material Zach Snyder gave him to work with, and I think he is the best Batman only in terms of how he looks in the suit. This movie is a massive breath of fresh air for how the character is presented though. DCEU Batman in BvS was evil and pretty stupid, getting manipulated by schizo Lex with ease, not thinking critically at all about Superman, fucking murdering people, etc. Frank Miller's Batman is good for an elseworld one off Batman, but it was such a horrible idea to make it the main in universe Batman for their movies. Even Frank Miller's Batman, edgy as he is doesn't like guns. It is so jarring to see Batman shoot people, and it eliminates his whole deal. Then in Justice League when he stops murdering people, he goes from over the top edge lord to useless. He gets his ass beat by anything that isn't a human jobber character, shows no exceptional intelligence or strategy of any kind, and acts purely on impulse and emotion. Both versions of Justice League to be clear. New Batman can convey what he is thinking with nothing but a glance and some foot steps, refuses to kill people, doesn't use guns, and uses his fucking brain. His feats in combat, even in this world that is scaled down to be more realistic compared to Affleck's Batman who (hypothetically lol) can fight meta humans, is mostly on par with or better than any on screen Batman when it comes to fighting normal people.