Rect.y

Description

Верхний левый угол (координаты точки) прямоугольника

This value is the same as yMin, but setting it will move the rectangle rather than resize it.

using UnityEngine;

public class RectExample : MonoBehaviour
{
    void Start()
    {
        Rect rect = new Rect(10, 10, 50, 30);
        // prints: y = 10
        Debug.Log("y = " + rect.y);

        rect.y = 20;
        // prints: (x:10, y:20, width:50, height:30)
        Debug.Log(rect);
    }
}