Funnily enough my family dragged me to this movie on Christmas because we had a hearty debate on what to watch (and my brother saw the Bumblebee trailer and said lol nope). It's quite a trendy in-thing film that amazingly despite its pop-culture Gen Z internet references, doesn't overstay its welcome (looking at you Emoji Movie).
The amusing thing is that I somehow never watched the first film prior to this (although my family did), which is weird... because I caught every Disney Animated Canon film from Bolt to Tangled in theaters. And I'll say this... if you never watched both films, as weird as it sounds, watch in the order that I watched the films: the sequel before the original. The second film is fine as a standalone and there's a clash in the messages that both films are trying to teach, so it might hamper your enjoyment of the sequel if you watched the original before this.