The Gold Edition of the game includes:
The base game
The season pass which contains upcoming DLC packs, including additional story content featuring new heroes, quests, and battles.
Also includes the Galactic Prestige Pack, with three exclusive and supremely stylish weapon skins for your team, unlockable right away. Save the galaxy, but do it with pizzazz!
Store Link: https://www.nintendo.com/store/products/mario-plus-rabbids-sparks-of-hope-gold-edition-switch/