Where do i get a transparent roblox studio logo?

if the studio one isn't in there i'd still start from the official files rather than a random png off image search. those are usually low res, and half of them have the transparency checkerboard baked into the image. and if it's going on anything public, have a read of the brand guidelines, they limit how you can use it.

Roblox has a brand/press page on their corporate site with the logos as proper transparent PNGs, search "Roblox brand guidelines". Not 100% sure the Studio icon is in there though, the main logo definitely is.