I have done similar work using the GitHub APIs before. I recommend using their GraphQL explorer to develop your queries interactively. You may need to fall back on the REST API instead of the GraphQL one for certain stats.
https://docs.github.com/en/graphql/overview/explorer
You can also refer to my code here, which may already collect some of the statistics you're interested in.
https://github.com/jstrieb/github-stats/blob/master/github_s...
I predict the most annoying part of this project will be dealing with authentication. There are a handful of ways to do it, and the permissions can be finicky depending on what data you are fetching.
Best of luck!