How do you get the X and Z position of the map, which is in the center of the screen?

EN: How do you get the X and Z position of the map, which is in the center of the screen?
PT: Como obter a posição X e Z do mapa, que está no centro da tela?
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EN: takes the reference from the camera, shoots a ray using Camera.ScreenPointToRay by passing a new Vector3 (Screen.width / 2, Screen.height / 2, 0).

PT-BR:pega a referência da camera, dispara um raio usando o Camera.ScreenPointToRay passando um new Vector3(Screen.width/2, Screen.height/2, 0)