You can evolve it to Weavile using 80 Sneasel Candy and the Razor Claw item. However, you will still need to encounter Weavile in the wild if you want to gather that sweet Sleep Research data.

In the case of Sneasel, it is also required to evolve Sneasel into Weavile. Here we will give you Pokemon Sword and Shield Razor Claw Location to help you in fights or evolution. If you have ...

Likewise, a Sneasel caught in Legends: Arceus cannot become Weavile, and any Kanto Pokemon cannot suddenly become Hisuian. You will still need to transfer or trade the above base forms to evolve them.