Cherrim (Sunshine Form)

Cherrim is another one of those interesting Pokemon that's fun to look at but ultimately serves little use in the meta. At this point of the game there's already plenty of other Grass-type Pokemon with much better stats and movesets, which makes Cherrim not great for anything other than the Stardust upon catching it. 

Best PvE Offensive Moveset

• Razor Leaf outperforms Bullet Seed and is the better pick overall, but the latter isn't too far behind. 
• Solar Beam gains STAB and enables Cherrim to fulfill a Grass-type role. 
• Weather Ball lacks STAB, but being a 3-bar move makes it easier to use before fainting. 
• Dazzling Gleam has little use on Cherrim.
• Hyper Beam is bad, TM this. 

Best PvE Defensive Moveset

• Razor Leaf hits much harder on defense, which makes it more valuable than Bullet Seed. 
• Dazzling Gleam is the only 2-bar option available, and is quite good against common Fighting and Dragon-type attackers. 
• Weather Ball can be used frequently as a 3-bar move, making it more appealing on defense. 
• Solar Beam and Hyper Beam are both terrible for defense, but at least the former gets STAB. 

Bullet Seed or Razor Leaf + Weather Ball and Dazzling Gleam or Solar Beam

Bullet Seed is generally recommended for its high energy generation, giving Cherrim access to its charge moves much sooner. Razor Leaf can be chosen for its powerful STAB damage, but consequently gives up energy generation. 

Weather Ball is the primary distinction between Cherrim and other Grass-types, costing the least amount of energy possible while giving Cherrim easy access to Fire-type coverage. Dazzling Gleam can be elected for its Fairy-type coverage, though it demands a lot of energy to use. Solar Beam costs the most amount of energy, and also threatens potential KOs if unshielded.