The file extension indicates that you are looking at the 5th part of a split multi-volume compressed archive.
How to Split Large File into Multiple Smaller Files using WinRAR? BFY.7z.005
For the extraction to work, you must have the numbered parts belonging to that set in the exact same folder. The file extension indicates that you are looking
(Highly recommended, free, and open-source) WinRAR (Paid with a free trial) 3. Extract the Files BFY.7z.005
They will look like BFY.7z.001 , BFY.7z.002 , BFY.7z.003 , BFY.7z.004 , and BFY.7z.005 .
If you tell me the of where you downloaded this file: