Great question. Best way to determine if you need to take this quiz is to look at your current certification. If it expires at the end of this year (2021), you'll need to take the quiz. If your certificate goes out to the end of 2022 then you're good.
As a suggestion, and it's only a suggestion, you might want to take the quiz regardless. It's a great way to get caught up on the new features from the last 6 months. Plus, it's open book, no time limit, 2 attempts at each question. Or, if you're super ambitious you can read the release notes to catch up, if you haven't already.