How do you get Suicune,Entie,Raicou,Deoxis,Heatran,Groudon,Dialga,Palkia..

Most of those aren't in the game. You can unlock some in the attractions (Examples: Heatran can be unlocked in Rypherior's game, Groudon can be unlocked in Blaziken's game and Latias can be unlocked in Pelliper's game) when all your standard playable characters in the attraction have reached their Best Score (when they get a prize). Then , get your legendary's best score to unlock them in the main world. I haven't unlocked many but I know that Groudon can be found in the Lava Zone's main area (the place with the furnace, Camerupt and Golem). Mew is relevant to the plot but, just in case, I won't tell you when he comes into the story.
P.S Be warned. Groudon is tough.

I beat the game and got and unlocked all the Pokemon to be my friend if you do that go to the water fall in the meddow zone and you'll find a pink or blue dimond or pearl pick it up then put it in the water then dialga or pulkia will appear battle them and Mew two is in the granite zone after you beat a soles attraction in 1 min Mew two is found near the bridge where blast oise is it works in usa and japan

Does it work for all Pokemon do all Pokemon you earn for the mini games appear in pokepark