What is the name of the mission in GTA V where you rob the Paleto Bay bank?

The mission in GTA V where the protagonists rob the Paleto Bay bank is The Paleto Score.

Michael De Santa, Trevor Philips, Franklin Clinton, and a hired gunman target the Blaine County Savings Bank in Paleto Bay. The robbery escalates into a major firefight involving police and military forces, making it one of the game’s most action-heavy heists.

The mission follows the Paleto Score Setup, along with the Military Hardware preparation. It is often confused with The Big Score, which is the later Union Depository heist, or The Merryweather Heist, which targets military cargo rather than a bank.

The Paleto Score is also notable for introducing the protagonists to heavy military resistance and for allowing the player’s crew selection to affect the final payout and events during the escape.