Hi Jessica,
I tried loading your /demo1/contact page and it appears to be working as expected.
The scripts are loading and the dropdown changes the selection options as it should.
The Script Not Loaded error is probably caused by incorrect syntax.
Make sure that you do not have errors in your script before publishing the site.
Regarding the form - it is not enough to add a button and link it to an email address, it does not work this way.
To learn how to send an email on form submission see below