Pandemic Disaster Assistance Act of 2020 This bill authorizes the Federal Emergency Management Agency (FEMA) to provide direct assistance to individuals who have been impacted by a pandemic and appropriates funds to the Department of Agriculture and the Department of Labor for unemployment compensation and disaster relief. Specifically, at the discretion of a governor or the President, individuals impacted by a pandemic will be eligible to apply directly to federal agencies for various forms of assistance, including (1) assistance under the Disaster Supplemental Nutrition Assistance program; (2) assistance under the Disaster Unemployment Assistance program; and (3) other needs assistance through FEMA's Individual Assistance program, including medical, funeral, and child care assistance. With respect to the Disaster Unemployment Assistance program, the bill creates a national floor for benefits at 1.5 times the national weekly average and provides a waiver to the requirement to exhaust state unemployment insurance options. With respect to the Disaster Supplemental Nutrition Assistance program, the Department of Agriculture must provide options other than an in-person interview.