Equitable Nutrition Assistance for the Territories Act of 2020 This bill allows Puerto Rico, American Samoa, and the Northern Mariana Islands to participate in the Supplemental Nutrition Assistance Program (SNAP, formerly known as the food stamp program) after submitting a plan of operation that is approved by the Department of Agriculture (USDA). (Under current law, the three territories receive block grants instead of participating in SNAP.) Such territories may request from USDA a one-time grant to pay the cost of the technology infrastructure necessary to implement SNAP, including the cost of information technology, information technology personnel, and training relating to program implementation.