Use ffprobe or ffmpeg to list ony english tracks
The command will show entries for those English tracks which have been assigned a language tag of eng:

ffprobe -show_entries stream=index,codec_type:stream_tags=language -of compact video.mp4 -v 0 | grep eng


Output e.g.

stream|index=1|codec_type=audio|tag:language=eng


(On Windows, use findstr eng in place of grep eng)