How to know height and width of object in screen?

I want to know height and width of object in screen.

I use object world position convert to screen position but I don’t know how to get width and height.

I confussed if object mouse position is equal to screen position.

I want to get proportion then I can use mouse position to get object texture relative position pixel.

Thanks for the help!

You can get the bounds of the object from its Mesh, Renderer, or a Collider component.