How to check the IVs of the Pokemon

Isle of Armor

In the Isle of Armor DLC, there is a mini-game in which you are tasked find Alolan Digletts throughout the island. By collecting these Diglett, you will be given various Alolan forms (as well as a Kantonian form and Alola starter) as rewards for returning them to their owner.

Base Version

You cannot obtain Alolan forms in the base version of Sword and Shield, but you can by transferring Pokemon into the game via Pokémon Home (as long as the base form exists with in the Pokedex) or by trading with others players who transferred them from Pokemon Home

Alolan forms do existin the Galar region, as Alolan Meowth can be found in one of the camps. This camp is located on Route 7, and is known as “Renee’s Camp”

It's similar to raising affection in the 3DS games - play with them until their play meter is maxed out, then feed them, then go back to playing. It's a little more efficient now as you can raise two at the same time. This is the method that works best for me:

1. Set up a Pokémon Camp
2. Face the two Pokémon you want to raise and Call them over to you
3. Get out the feather/bell like cat toy and wave it around (I just mash the A button) in between the two. The two Pokémon will attack it over and over, each time letting off some orange notes
4. After a while, the Pokémon will stop attacking, stand still in place, and release a speech bubble with orange notes in three times in a row - they are now ready to move to the next step
5. Cook a curry - I don't think the quality matters too much, but it doesn't hurt to aim for a nice one. Wobbuffet or higher should be fine, though
6. Go back to step 2 and repeat
7. At various points throughout this procedure you will see pink hearts instead of orange notes - this indicates they've gone up an affection level. Once they reach the maximum level, instead of orange notes at step 3, you will get nothing at all - this indicates the affection is maxed out

It's useful to max out the affection as soon as you get anything you're planning on keeping in your party. Especially a Farfetch'd/Sirfetch'd - with maxed affection and holding a Leek, every single attack it makes will be a critical hit!