How to Learn a Source code download from Github?

There’re only some Cpp files & H files, I don’t know how to use this code which is without sln file or bat file or something like that.

If there is a u project file you can generate the sln manually: How to generate sln file from launcher downloaded source - Getting Started & Setup - Epic Developer Community Forums

If there’s a uproject, I wouldn’t come here for help. Anyway, thank you.