Unarmed is the bare-fist option every character has by default, so there is no gun or tool involved. You throw punches and take swings when you have nothing equipped, which suits brawls and low-key trouble. It costs nothing and is always available, making it the true baseline of the arsenal.
There is nothing to get here since fists are the default state with no weapon drawn. You will always have this option available from the start of GTA 6.
The community companion for Grand Theft Auto VI. Database, maps, guides and tools for Vice City and the state of Leonida.