My gameobject is pixelated

Hi everyone i have a cuboid in my scene. When i start my game, the cuboid appears pixelated.
Any Help would be appreciated
Thanks a lot
The picture of the rendering is posted109328-best.jpg
@Hellium

That’s aliasing. Try to enable the antialiasing in your quality settings, or use a antialiasing post-process.

Remy_Unity · can you please tell me as to waht i should make the antialising in my settings
Thanks a lot
!!!
I will definitely reward you!!!