Here is what Common App suggests you think about to answer the optional Covid prompt:

COVID-19 has affected students in dramatically different ways. If you need it, the COVID-19 and natural disaster question in the Additional Information section is a place for you to describe the impact of these events.
The question is not intended to be an extra essay. There’s also no need to describe how your school responded to these events. Your counselor will have an opportunity to discuss impacts like closures, online instruction, and grading policies. Instead, consider how these events may have impacted you, your family, and your learning environment. Examples might include:
- Illness or loss within your family or support network
- Employment or housing disruptions within your family
- Food insecurity
- Toll on mental and emotional health
- New obligations such as part-time work or care for siblings or family members
- Availability of computer or internet access required to continue your studies
- Access to a safe and quiet study space
- A new direction for your major or career interests