Often indicates a "small" version, "sample", or "short" version.
If you can tell me or what type of project it relates to, I may be able to provide more context. SS-JulSS-010_s.7z
Likely indicates the project or topic (e.g., Screenshot, Sample, Subject, Secret). Jul: Indicates the month of July. Often indicates a "small" version, "sample", or "short"
Use a file archiver tool like 7-Zip (Windows), The Unarchiver (Mac), or a command-line tool to extract the file. Often indicates a "small" version