How find coordinates of ui object in screen space

I have gameobject with image component. It belong to canvas, and this canvas to another canvas.

How can I get x and y of that gameobject at screen space?
I’m find only Transform.position and Transform.localPosition.
But if I try
Camera cameraComp = camera.GetComponent();
Vector3 t = cameraComp.WorldToScreenPoint(gameObject.transform.position);
I have a really crazy digits.

You can get screen space coordinates using the position property on the RectTransform component.