If you participated in last Max Raid Battle Event you can get Shiny Zeraora and 8 Armorite Ore.
Pokémon HOME servers reached a very high demand for Shiny Zeraora. As a result of that last at 5 PM PDT / 1 AM BST Pokemon HOME servers were unavailable for few hours. Many players have been waiting to pick their Shiny Pokémon. Luckily, Pokémon Company solved that and we were able to get new Pokemon with amazing stats and code for Armorite Ore.
If you participated in the last event and did everything that was required, you can open Pokémon HOME and look into “Mystery Gifts”, from here “Gift Box” and of course get 2x new boxes: “Victory over Zeraora” 1 and 2.
The first box will let you claim Shiny Zeraora and the second one let you claim code for Armorite Ore that you can redeem in Pokémon Sword or Pokémon Shield.