Hi @Dylan_Hunt, thanks for the post. At the moment, the noscript tag is not supported in the code editor. The best thing to do is to just leave it out completely.
Leaving the noscript tag in the custom code, and using document.writeln will work to save the code, but will have no effect on the page.
That code is just saying, "if there is no support for javascript in the browser, then display the link “https://www.facebook.com/tr?id=982578691793703&ev=PageView&noscript=1”
I hope this helps!