In Pokémon X and Y, you can find Heart Scales in certain places like Route 8 or Frost Cavern but the best way to obtain plenty of them is by fishing multiple Luvdisc with the Old Rod at Route 8, Route 12, Cyllage City, Ambrette Town, Shalour City and Azure Bay.
They have a 50% chance of holding a Heart Scale so you can either catch them or use the move Thief to get it (it's the TM46 and please remember that the Pokémon using the move mustn't be holding an item).
You can increase this chance by 10% if the Pokémon leading your Party has the ability Compound Eyes.
Parfum Palace. Find the owner's Furfrou and he will give you it.
*Mew is not catchable in Pokemon x and y, but you can get him online from wondertrades and such. Mewtwo however, is catchable and you can find him in the cave in pokemon village.
Laverre City and the Route under it.
Pokemon X and Y are sold at MSRP of $39.99 (CAD)
The MSRP of Pokemon Y or X is $39.99 (CAD/USD)
No, you cannot. They are only avaliable in Pokemon X and Y
You can find help for a team for Pokemon Y on the website US Game.
Parfum Palace. Find the owner's Furfrou and he will give you it.
*Mew is not catchable in Pokemon x and y, but you can get him online from wondertrades and such. Mewtwo however, is catchable and you can find him in the cave in pokemon village.
A, B, Y, A, A, Y, A, Before the ball turns yellow
You may be able to find someone to trade a Special Torch for Pokemon C or Y in a Pokemon Facebook group.
You will have to transfer it from a different Pokemon game
You can find a Rhyhorn at the 3D area of the Glittering Cave.
Laverre City and the Route under it.
Drifloon is found at the valley windworks
Dive is no longer a TM or a HM in Pokemon X/Y. You'll have to have a Pokemon learn it naturally.
The list attached gives an overview of where they are