The official Blu-ray release by Kino Lorber Studio Classics includes English subtitles. If your digital file is missing them, you can find community-made versions:
If your subtitles are out of sync with the audio, you can fix this in real-time or permanently: : Press 'G' to delay the subtitle. Press 'H' to speed up the subtitle. subtitle Scream.Pretty.Peggy.1973.576p.BluRay.A...
: Look for the specific "BluRay" or "Kino" tag on OpenSubtitles to ensure the timing matches your high-definition file. The official Blu-ray release by Kino Lorber Studio