As in, for example, the streamer is playing CSGO, and you want to know who wins?
Twitch API doesn’t present that information. Twitch is very limited on what information it has about whats actoually going on inside a game a streamer is playing, and generally it’s limited to what map or character a streamer is playing and that was only for Overwatch/some FPS titles. And last I checked this was deprecated in v5 and v5 itself is deprecated
This also may not be permitted as a valid use case of the API, you should read carefully. There are also a great many legal laws worldwide you would have to be compliant with