It looks like you've provided a filename for a subtitle file for the movie, specifically a BRRip XviD version with Slovenian subtitles (SLOSubs).
Ensure the subtitle file (usually ending in .srt ) has the exact same name as your video file (e.g., Monster.Hunter.2020.mp4 and Monster.Hunter.2020.srt ) and keep them in the same folder. Most media players like VLC will then load them automatically. subtitle Monster.Hunter.2020.SLOSubs.BRRip.XviD...
If you actually need English or another language, you can search sites like Subscene or OpenSubtitles for "Monster Hunter 2020 BRRip." It looks like you've provided a filename for