Thank you for playing! I enjoyed seeing your approach to doing something with jobs with the theme repurposed!
There are a few plug and play leaderboard options out there, and I used SilentWolf (https://silentwolf.com/) which is an easy to use free plugin for Godot. It isn't the best one out there, but it works well for what I need it to do. I've used it before for other game jams, and it isn't hard to set up (the instructions are basically put the files in the addons folder and do a couple API calls).