Since a formal English dub does not exist, you can stream or download the original Korean version with through these platforms:
If you want the isolated score (music without dialogue), purchase the Parasite Official Soundtrack by Jung Jae-il on Amazon Music, Spotify, or Qobuz. You can download high-quality DRM-free tracks from or 7digital . Parasite Movie English Audio Track Download
Beyond legal and ethical concerns, downloading an unofficial English audio track for Parasite presents practical issues: However, this is not a dub; it is
track found on some UK Blu-ray releases. However, this is not a dub; it is a service for the visually impaired where a narrator describes the on-screen action and reads the dialogue from the subtitles. The Famous "Fan Dub" If you’ve seen headlines like "Parasite Finally Gets an English Dub," this is not a dub