Currently limited to Level 40 trainers.

Good news trainers, Pokémon HOME is finally able to be connected with Niantic’s augmented-reality smartphone game Pokémon GO. This means you can now transfer pocket monsters from GO to your Pokémon games on the Nintendo Switch.

Read the full article on nintendolife.com

Original source: https://www.nintendolife.com/news/2020/11/pokemon_home_-_pokemon_go_connectivity_is_now_live_its_just_not_available_to_everyone_yet