Fields of Honor Alolan Exeggutor .

When the player helps the Diglett Trainer find at least 75 Alolan Diglett, the player can get an Alolan Exeggutor as a gift.

This marks the first time an Alolan Exeggutor can be obtained in Sword and Shield.
(This statement above excludes any kind of transfer via Pokémon HOME)

This gift cannot be shiny.