I forgot there are some caveats with python on windows, but I think you should be able to run the scripts.
The build_profile.py script is meant to be the main entry point. This script uses the profile_config.ini arguments to run the cr30_to_ti3.py directly, so you do not have to provide arguments for running the conversion.
You could run it standalone, and works fine, but you have to provide it specific arguments for your input/output files, otherwise it tries to find and use example files (that do not exist anymore, testprofile v2.csv is a old filename, my bad).
There might be additional issues with the ArgyllCMS installation, but that should not influence the CSV conversion.
To rule things out, first download the latest release from github. Remove previously downloaded versions. After extracting it, navigate the terminal to the src directory (you did that correctly looking at the screenshots).
Then simply run: "python3 build_profile.py".
With the latest release, all example files are in the correct location (this is defined in the config), and should run and deliver at least the output_example.ti3 to the output directory.