Be cautious when downloading multi-part archives from unofficial sources, as they can sometimes contain malware or be incomplete. Ensure you are obtaining these from a trusted source.
If you tell me what specific game content or project you are trying to assemble, I can help you find the correct, complete source for it.
Based on common file naming conventions, this appears to be the fifth part of a multi-part RAR archive, likely associated with a Forza Horizon 4 data dump ("FH4DD") or similar game-related content.
These files must be downloaded together (part01, part02, etc.) and placed in the same folder before they can be extracted using tools like WinRAR or 7-Zip .