If you want to grab a Shiny Meloetta for yourself, you’re going to have to first own Pokémon Scarlet and Violet, and both parts of The Hidden Treasure of Area Zero DLC.
After over 14 years of being unavailable, Shiny Meloetta can now be received as a reward for completing the Paldea, Kitakami, and Blueberry Pokedexes in Pokemon HOME ...