Level-Up Moves:
* Level 1: Scratch, Confusion
* Level 4: Quick Attack
* Level 7: Detect
* Level 10: Psycho Cut
* Level 13: Drain Punch
* Level 16: Zen Headbutt
* Level 19: Close Combat
* Level 22: Swords Dance
* Level 25: Future Sight
* Level 28: Psycho Boost
* Level 31: Shadow Sneak
* Level 34: Leaf Blade
* Level 37: Psychic Fangs
* Level 40: Sacred Sword
* Level 43: Aura Sphere
* Level 46: Mind Crush
* Level 49: Drain Punch
* Level 52: Psycho Cut
* Level 55: Zen Headbutt
* Level 58: Close Combat
* Level 61: Future Sight
* Level 64: Psycho Boost
* Level 67: Shadow Sneak
* Level 70: Leaf Blade
* Level 73: Psychic Fangs
* Level 76: Sacred Sword
* Level 79: Aura Sphere
* Level 82: Mind Crush
* Level 85: Drain Punch
* Level 88: Psycho Cut
* Level 91: Zen Headbutt
* Level 94: Close Combat
TM/HM Moves:
Gallade can also learn a variety of moves through TMs and HMs, including:
* TM01: Hone Claws
* TM03: Water Pulse
* TM04: Calm Mind
* TM05: Roar
* TM06: Toxic
* TM10: Hidden Power
* TM11: Sunny Day
* TM12: Taunt
* TM16: Light Screen
* TM17: Protect
* TM18: Rain Dance
* TM21: Frustration
* TM27: Return
* TM28: Thunderbolt
* TM30: Shadow Claw
* TM31: Brick Break
* TM32: Double Team
* TM34: Shock Wave
* TM36: Sludge Bomb
* TM40: Aerial Ace
* TM42: Facade
* TM44: Rest
* TM45: Attract
* TM48: Round
* TM49: Sweet Scent
* TM50: Overheat
* TM51: Stealth Rock
* TM52: Focus Blast
* TM55: Skill Swap
* TM58: Sky Uppercut
* TM68: Giga Impact
* TM70: Flash Cannon
* TM80: Rock Slide
* TM87: Swagger
* TM90: Substitute
* TM93: Nasty Plot
* TM94: Aeroblast
* TM98: Nature Power
* TM100: Confide
Breeding Moves:
Gallade can also learn some moves by breeding, such as:
* Egg Moves: Swords Dance, Drain Punch, Close Combat, Future Sight, Psycho Boost, Shadow Sneak, Leaf Blade, Psychic Fangs, Sacred Sword, Aura Sphere, Mind Crush
Note: Some moves may require specific conditions to be learned, such as a certain level, certain held item, or being bred with a parent who knows the move.
This information should help you train your Gallade with the best move set for your specific needs!