Ever Grande City: 100 encounters (Fishing with Super Rod)
Meowth Pick-up
Potions: Super Potion 2x
Repels: -
Balls: Great Ball 1x
Berries/Seeds: -
Other: Big Pearl 1x, Mystic Water 1x, Poison Barb 4x, Star Piece 1x, Stardust 2x
Trainer Pick-Up
Potions: Potion 1x
Repels: Repel 2x
Balls: Pokeball 4x
Others: -
I didn't find any Heart Scale or Red Shard while using Meowth with Pick Up + Pay Day, but using Knock Off in Meowth I could identify Luvdisc and Corsola carrying Heart Scale/Red Shard and therefore capture it. I collected 12x Heart Scale and 2x Red Shard with this method.