How do you get to scroopolis city in emerald?

To reach Scroopolis City in Pokémon Emerald, you first need to progress through the game until you obtain the Surf ability. Then, head to Route 118 and use Surf to navigate across the water. From there, make your way to Route 119 and continue until you reach the entrance to the city. Follow the path, and you’ll arrive in Scroopolis City.