Providing Liquidity for Uncollectible Sales Act of 2020 or as the PLUS Act of 2020 This bill allows a new tax credit for the uncollectible accounts receivable of an eligible wholesale distributor. The bill defines an eligible wholesale distributor as any person engaged in the trade or business of selling inventory to a food and beverage establishment that ceases to provide on-premises consumption of food and beverage on or after March 25, 2020, pursuant to an order or recommendation of an applicable governmental authority.