Help with jQuery

Hey guys,
I’m just starting to learn how to code and I was looking to start by creating a simple game of tic tac toe.
In the script.js file, I’m trying to get the tacbox class to toggle into the clicked class when it’s clicked. Basically, I’m not sure why it’s not doing it.
I think I linked jQuery successfully, but I’m not sure as this is my first real project.

Any help would be greatly appreciated.

Nevermind, solved myself. I linked it incorrectly