Another angle: "135" might be part of a code. For example, in some games, pressing numbers on the keyboard in a certain order (like 135) might trigger a cheat, such as unlimited money. If "Pickup" is the game name, then entering code 135 during the game could activate infinite money. But again, without knowing the exact game, this is hard to confirm.

Another angle: The user might be referring to a mobile game or a browser game where "Pickup 135" is a specific truck model, and achieving "unlimited money" is a cheat code or mod. For example, in some truck simulator games, players can modify the game files to have unlimited money or infinite resources.

If it's a game hack, the user wants a guide on how to use an unlimited money cheat code for this game in 2021. Alternatively, if it's a car mod for a game, allowing the player to drive a pickup truck model 135 with unlimited money. But I need to verify this.

Wait, "Pickup Truck" games do exist, where players drive various pickups through obstacles. If "Pickup 135" is a specific truck model in one of those, and the cheat code allows infinite money for in-game purchases, that's possible.