Question: Should I write the Covid-19 essay for the Common App?

A: Absolutely!

First, nothing is optional! And second, why wouldn't you want another 250 word essay to showcase who you are aside from grades, scores and extracurriculars? So, yes, definitely do it!

https://www.forbes.com/sites/kristenmoon/2020/08/24/a-guide-to-writing-the-covid-19-essay-for-the-common-app