Burmy (Trash)'s best moveset in Pokémon GO is Tackle and Struggle, with 2.80 damage per second, and it can deal 25.7 damage before Burmy (Trash) faints. This is true when battling in neutral weather.
All Burmy (Trash) movesets ranked
Here is a complete list of Burmy (Trash) movesets in Pokémon GO, ranked by their DPS and TDO. You can change the weather and the opposing Pokémon.