National Purple Heart Hall of Honor Commemorative Coin Act This bill directs the Department of the Treasury to mint and issue $5 gold coins, $1 silver coins, and half-dollar clad coins emblematic of the mission of the National Purple Heart Hall of Honor. The bill limits the issuance of such coins to the one-year period beginning on January 1, 2021. The bill prescribes surcharges for coin sales, which shall be paid to the National Purple Heart Hall of Honor, Inc., to support the mission of such organization, including capital improvements to the National Purple Heart Hall of Honor facilities.