Galarian Rapidash

Galarian Rapidash looks pretty with its colorful appearance, but with poor stats and existing Pokemon who have superior meta performance, it's mostly a dex entry at this phase of the game. 

Best PvE Offensive Moveset

• Psycho Cut benefits from STAB, and is preferred for offense.
• Low Kick has no use on offense. 
• Fairy Wind can be chosen for a Fairy-type attacker role. 
• Psychic gets STAB and is recommended to fulfill a Psychic-type attacker role. 
• Play Rough also gets STAB, but performs slightly worse. 
• Megahorn and Wild Charge* lack STAB and are not recommended. 
• Body Slam has no use on offense.

Best PvE Defensive Moveset

• Fairy Wind is the overall best Fast Move for Galarian Rapidash.
• Low Kick may be useful against Steel-type attackers, but the difference compared to Psycho Cut is minor. 

• Body Slam is preferred for being a 3-bar move, and being able to be spammed frequently. 
• Psychic and Play Rough perform almost identically on defense, the most notable difference being their coverage. 
• Wild Charge* has great raw power, and has overall good defensive performance.
• Megahorn takes the longest to access as a 1-bar move, making it the least desirable. 

Psycho Cut features high energy generation and low damage output, despite benefiting from STAB. Fairy Wind is very similar, though its coverage is worse when backed into a corner by Poison-type Pokemon. Low Kick is a Fighting-type move which provides valuable coverage, but its stats are so poor that it's considered one of the worst moves in the game. 

Body Slam costs the least amount of energy, has a respectable power for its energy cost, and can be spammed very frequently. The differences between the rest of Galarian Rapidash's charge moves are somewhat minor, and mostly depends on what coverage is preferred. Wild Charge has high raw power and good neutral coverage, making it a great sudden nuke that can also prey on key Water or Flying Types. Psychic takes advantage of STAB to out-damage Megahorn in neutral fights, while Play Rough requires 5 more energy to provide its Fairy-type coverage.