7zip file with numbers on it like 001 means that you only have a part file of the whole compressed file. Microsoft Learn How to Open and Extract .001 Files - Microsoft Q&A
Based on the file naming convention, is the first part of a split 7-Zip compressed archive . SS-Nin-030_s.7z.001
To help you further, do you have the other parts of this archive (like .002 , .003 ) in the same folder? How to Extract .7z.001 files - Microsoft Q&A 7zip file with numbers on it like 001
