If you are writing a "paper" or review of the film, it is worth noting its polarizing reception:
You can find the official subtitled version through major platforms like Amazon , Apple TV, or Google Play Movies. Critical Reception subtitle The.Book.of.Henry.2017.720p.BluRay.x26...
While I cannot provide direct subtitle files or links to piracy sites, here are details regarding the official release and subtitle availability: If you are writing a "paper" or review