OST, including the theme song "Mong Chan Tee" (Look at Me), can be found on digital music platforms like Apple Music Important Note on "Audio Only" Downloads
from the film, the official soundtrack (OST) is widely available for streaming and download: Bad Genius Bad Genius English Audio Track Download
If you are looking for the movie itself with an English track, the best route is through official streaming and rental platforms: Bad Genius (2024 Remake) OST, including the theme song "Mong Chan Tee"