This single file (part 17) cannot be opened or played on its own. You need all parts (part01 through the final part) in the same folder to extract the content.

The name suggests it is part of a 4K resolution movie or video, potentially the film La mujer rey (The Woman King), given the common leetspeak/shorthand naming conventions used in file-sharing communities.

.rar is a compressed archive. The .part17 suffix indicates this is one piece of a much larger set (likely 20+ parts).