Question: how to play 2 player on pokemon sword and shield?
Answer: Sadly, there's no way to play the main game of Pokémon Sword and Shield in local or online multiplayer. While Pokémon Let's Go allowed a local co-op player to drop in and explore the world with you, Pokémon Sword and Shield has no similar option. The main bulk of the game is very much a single-player experience.