If I buy Baldur's Gate 3 on Xbox, can I also play it on PC?

No you cannot

The game must be in the MS store and be part of playAywhere. A game's product page will tell you what it supports. BG3 supports neither

https://www.xbox.com/en-US/games/xbox-play-anywhere

Not only is baldurs gate 3 coming out but a double pack of baldurs gate enhanced and baldurs gate 2 dark alliance enhanced. I am looking forward to playing thrm all over again

Hello, Whyumad. I'm Arturo, and I'll be glad to provide assistance with your inquiry today.

Did you mean Baldurs Gate 3 instead of Blair Gate 3?

If that's correct, Baldurs Gate 3 can be played on both Xbox Series X and S.
So if you're interested in purchasing the game, you can buy it by clicking below or looking for it in the Microsoft store:

https://www.xbox.com/games/store/baldurs-gate-3/9nd58lqtg09t

Furthermore, it is important to mention that according to the game developer, Local co-op is currently not supported on Xbox Series S.

I hope you find this answer helpful to your inquiry. However, I'll remain attentive to any other one you may have.

Regards,

Arturo.

I loved Baldurs Gate!!! Would definately buy if made BC!!

I am having same issue but just with Warzone on PC, i can play some other games like SMITE, Overwatch, Diablo 3, Cyberpunk 2077, Baldur's Gate 3... but warzone just mutes all sounds, cant listen anything like Spotify or Youtube with Warzone on background.