where to find ralts honedge and someone who can use shell smash before kiki's gym

[321cab]

title  edit: also where can i get a dawn stone?

Edited May 23, 2022 by 321cab

[Nocturne93]

Ralts and Honedge are not available at that point in the game; you can find them later on after the city restoration. Pokémon that can learn Shell Smash and are obtainable before the battle with Kiki are Shuckle, Magcargo, Crustle, and there's a 50% chance of encountering a Turtonator in Pyrous Mountain.

As for your last question, dawn stones can be found by mining the glowing rocks scattered throughout the region.