How do you catch to lavender town in firered?

You can't "catch" Lavender Town in FireRed. It's a location, not a Pokémon.

You can visit Lavender Town by following these steps:

1. Defeat the trainers in the Route 4 tunnel: This will unlock the path to Lavender Town.

2. Head east from the tunnel towards the town.

3. You'll encounter the iconic Lavender Town music and the town's eerie atmosphere.

You can then explore Lavender Town, visit the Pokemon Tower, and find out about the mystery surrounding the town!