About the submit file

I have a question about submit file.
We required the submit a compressed file that contains all the files that make up your robot’s code.
Does the compressed file that contains all the files that make up your robot’s code mean source code and customized robot file which the extension is .json?

Yes the robot json file and the source code.

If you programmed in Python then the source would be the set of python files. If you programmed in C++, the source would be the set of .cpp/.h files plus the makefile or visual studio project/solution files.