Came across this on github yesterday, requires python to be installed. I still recommend joining the invite-hawk discord or checking the forum for open tracker info as this script in its current state is not as reliable.
Here is a direct link to set it up https://github.com/NDDDDDDDDD/TrackerChecker/wiki/Setup#tutorial. However, this tutorial may not work so I added some additional instructions below.
Instructions for Windows:
1. download python if not already installed https://www.python.org/
2. download requirements.txt, trackerchecker.py, trackers.json, and trackers.txt from https://github.com/NDDDDDDDDD/TrackerChecker and place in a folder
3. Open requirements.txt and delete the line that reads json then save.
4. open command prompt/cmd as administrator (type cmd in search bar, right click on command prompt app, run as admin)
5. follow steps in pic below and do not forget hit enter after typing the folder location of the files
cd "foldername".
Replace "foldername" with the folder location of the file, for example "C:\somewhere"
5. type pip install -r requirements.txt, hit enter
6. type python trackerchecker.py to run script
If you run into any issues comment below and I'll try my best to help.