In the main series games, Dragon scales can be used to increase the power of Dragon type moves (other types have similar items). It's possible that something like that could be implemented at some stage, but I wouldn't count on it. Even if it is, you'll almost certainly find more scales by then if you keep playing.
Lead with Aggron and use Dragon Tail on Espeon to bring in Malamar. Once Aggron faints, use Golem to Roar Malamar out. (Reuniclus and Mew are the only ones you can properly set up on). Once you get a suitable Pokemon to set up on, do the usual steps. Stored Power everything except Malamar, which you Moonblast. (Metagross might take more than one Stored Power to KO, hope you still have.
Pokemon Sword and Shield's Isle of Armor DLC is absolutely brimming with new pocket monsters and locations to discover in the wider Galar Region, but there are also a number of new mechanics that.
As explained by the game’s official website (which Gematsu has helpfully translated), Dragon Quest Walk is more of a traditional RPG than Pokemon Go, with quests to accept, monsters to battle.
Pokemon Go has a lot of Pokemon for you to hunt down and catch. Some are easy to find, while others are harder. In the latter group are certain Pokemon who only appear in special places, making them much harder to find than their more common counterparts. Magikarp is one of these Pokemon, where he is common in some places, but extremely rare in others. Making things worse, Magikarp evolves.
I assume you mean the Dragon Fang. It's a hold item so any pokemon can use it, but in the wild a Dragonaire or Dragonite may be holding it. If you mean the evolutionary hold item the Deep Sea.
If you just updated Pokemon GO on your phone you might have noticed a brand new button on the Pokemon menu. “New Attack” sits there, taunting you with all of the possibilities it opens up. But if you haven’t been following all the latest Pokemon GO developments, you might not know what those are. Hell, you might not even know how the whole thing works. Here’s our guide on what New.
There is no other use for them. As for what moves you should get, I can't tell you. The point of heart scales is to get back a move from the pokemon's natural moveset, so if you, say, wanted to teach your Gallade Leaf Blade, you'll have to go to Pastoria City and pay a heart scale to learn it.