The sequel contains many references to the prequel. But the storylines and how it ends are rather silly and underwhelming.
Pennywise knows everything about everyone, but when they come to his lair, he's just smashing that damn wall to get them out of their hideouts. And he's defeated by being insulted, rather silly.
In conclusion, it's like watching a youtuber trying to stretch their video so it reaches the 10 minute mark. Just like one of the characters' plot, the ending is rather disappointing. 5.5/10