There is no official "In-N-Out Monopoly" board game licensed by Hasbro. What you likely have is a promotional piece—a custom game board, tray liner, or peel-off ticket game distributed by In-N-Out Burger restaurants during a limited marketing campaign (notably the 1990s–early 2000s "Monopoly"-style instant-win promotions).
Reality Check: Most promotional fast-food games are low-value novelties ($5–$20). Only pristine, early, complete custom board sets command significant prices. Don't expect Hasbro Monopoly prices—this is advertising ephemera, not a mass-market board game.