How to get an Objects position per axis?

Okay I am trying to do something like this but I don’t know how to pull an objects, say z axis, to continue the statement.

 if (//Say z is 0.5f while ignoring the position of x and y)
             //Do something

gameObject.transform.position is a Vector3 that has an x, y and z field.

var position = gameObject.transform.position;
if (position.x == 5) {
//do something

Perhaps you should take a look at the unity tutorials…