A popular set of "fixed" subtitles, cross-referenced with the original screenplay and Jane Austen’s novel, is shared on the Pride and Prejudice Reddit community Public Repositories:
Standard verified files for the 1995 version (starring Colin Firth) are often indexed on sites like OpenSubtitles, though the Reddit-sourced version is currently noted for superior linguistic accuracy other than English? pride and prejudice 1995 subtitles verified