Question: pokemon sword and shield how to unlock hidden abilities?
Answer: So far in Sword and Shield, the only way to get a Pokémon with Hidden Abilities is to battle and catch one in a Max Raid Battle. ... 
Possibly, someone could trade a Pokémon to you that has a Hidden Ability. ... 
Once you've caught a Pokémon with a Hidden Ability, you can take it to the Pokémon Nursery and breed it.