1 and 2 are classics, definitely worth playing. They can be kind of a hassle to get into if you don't understand tabletop D&D rules (specifically Second Edition, which is what they run by). So you might want to look up a guide on how to build a good character or something of that nature. But once you get over that hump, they can be very rewarding.

I personally have no intention of playing 3. People say you can totally ignore the cucked stuff, but while I understand that while they might technically be optional, I don't buy for a second that they can be ignored. Ignoring the fact that character creation itself is loaded with cuckery, but the game by and large sounds too damn horny for its own good, with sexual material shoved in everywhere in places it doesn't belong, and everyone is completely indiscriminating in what they will fuck, including your own party members. No thank you, I'll pass. Cucked writing is like anchovies on pizza; even if you eat a slice without any on it, you'll still smell and taste them. Come to think of it, I have the same opinion on typical Bioware-style romances; you can ignore those too, but you know they affected the writing of the characters negatively as resources that could have been spent in more productive areas still went into making them another flavor of fuckability.

That, and Baldur's Gate 3 completely ruined a couple of my favorite characters from the original games. So screw it even more.