Trafficking Survivors Relief Act of 2020 This bill establishes a process to vacate convictions and expunge arrest records for certain criminal offenses committed by victims of human trafficking that directly result from or relate to having been a trafficking victim. It defines the offenses eligible to be vacated or expunged and sets forth procedures for filing a motion. The Government Accountability Office must assess the impact of this process, including the number of human trafficking survivors who file motions to vacate convictions or expunge records. Finally, it permits certain grants for legal representation to be used to seek post-conviction relief.