It seems you can download the files from that platform.
As I said, there are several ways to count the words of a file.
You can even look for word count online pages and paste the text there, which I don’t find as convenient.
Your local text editor perhaps has some way to count words.
I’m sure there is even a command line to do that too.
Otherwise, if you switch to VSCode, it does so automatically. The spec editor is tailored for programming, so I think you’ll find VSCode easy to adapt.
One of the forum users made an extension with the syntax for choice script. I think it’s one of the best ways to write CS games.
You can find it here