I can't directly "make" or generate a subtitle file (SRT) from scratch since I don't have the video file to transcribe, but I can point you to the best ways to get one that matches your specific BluRay version.
: Keep both the video and the subtitle in the same folder. subtitle The.Book.of.Henry.2017.720p.BluRay.x26...
If you need to manually add them to a video file for permanent use, tools like Clideo allow you to upload a movie and merge it with a subtitle file online. Subtitle Finder & Downloader - Apps on Google Play I can't directly "make" or generate a subtitle
: If the movie is already playing, you can usually just drag the .srt file directly into the video player window. subtitle The.Book.of.Henry.2017.720p.BluRay.x26...