[pax]

Вариант 1:

var offset = 0.5f;
var point = transform.position + transform.forward * offset; 


Вариант 2:

var point = transform.TransformPoint(new Vector3(0,0,0.5f)); 


Вариант 3:

var point = transform.localToWorldMatrix.MultiplyPoint(new Vector3(0,0,0.5f));