Since the movie is likely 50GB+, you need at least 100GB of free space (50GB for the .rar parts and 50GB for the extracted movie).
Because REMUX files—which offer the highest possible video and audio quality by stripping everything but the movie from a Blu-ray—are often 50GB or larger, they are split into many "parts" (like part29) for easier sharing and downloading. elultimoduelo2021remuxg36.part29.rar
Never move part29 into a separate folder until the extraction is 100% complete. Since the movie is likely 50GB+, you need