The COVID-19 pandemic cost 114 million people to lose their jobs over 2020. So, if you were infected and quarantined due to COVID-19 (or if you were unlucky and had more severe health issues due to the virus), then note that on your resume as an “illness-related employment gap” or simply due to COVID-19.   In one or two sentences, you can explain you had to take a break from work due to COVID-19 and that you’re now fully recovered and ready to work again. Similarly, if you were working for a business that got impacted due to COVID-19 (such as an airline company) you can, in one sentence, mention you were laid off due to the impact of the pandemic and mention what you did in the meanwhile to find a job or hone your skills.