How to make snowballs fall from the top randomly in unity 2d?

Question

C++ / C#

It is necessary so that they randomly fall from the top of the screen

Answer 1

Need a script for it

So write.
Why repost the question? You didn’t describe a damn thing in the previous one, where you were asked what exactly didn’t work.
The simplest task.
Using Random.Range(xMin, xMax) you select a spawn point beyond the upper boundary of the visible zone, spawn the "snowball" object, hang a MonoBehaviour on it, move it down in Update, and check in LateUpdate if it has gone beyond the lower boundary of the visible zone, if yes - destroy, if not, then wait for the next Update.