If all else fails, look for Max Raid Battles on the Y-Comm. I got nearly all my Sword exclusives in this way. The only one that you can't get through them is Zacian. For starters, they're quite common in Surprise Trades. If you're breeding in any serious capacity in this game, you'll have a lot of leftover Pokémon, which you can then Surprise Trade away (which gets you the bonus of more Trainer IDs and thus better odds at getting a prize in the daily lottery).Update:
I'm at about 226/400 Pokemon or so. I still need Sobble and a foreign ditto. And I'm missing a lot of Sword exclusives. I'm currently training and catching Pokemon in the wild area to expand my dex faster. If anyone has Sword, I have Shield. I'm missing a ton of Sword exclusives.
What happens when you try to use the train? (I also looked up the Japanese names, and while I found "Brassie Town" referring to Wedgehurst, I cannot find a "Score City.")[
Yes i can, but not to Score City