My code isn’t highlighted like Rick’s in the video. I installed the addons that were specified and it still isn’t working?
When in Visual Studio Code, press ctrl+k followed by ctrl+t, then choose any of the dark themes that are presented in the roll/down menu. Hope this works for you.
VS Code can be a pain to get set up quite right. Make sure that your extensions are up to date, and make sure your VS Code package is up to date in the Package Manager.
Then from inside Unity in Editor|Preferences|External Tools, Regenerate Project files.