You could use ‘Screen.width’ to get the current screen width, then use it to calculate your position of your liking. Could do something like this for example:
for (int i = 0; i < 52; i++)
{
if (i % 4 == 0)
{
// b1 _.transform.position = new Vector3 ((400 + 5 * i), 730, 1);_