Version: 2020.2
public static Vector3 insideUnitSphere ;


Returns a random point inside or on a sphere with radius 1.0 (Read Only).

Note that the probability space includes the surface of the sphere because value, which is inclusive to 1.0, is used to acquire a random radius.

using UnityEngine;

public class Example : MonoBehaviour { void Start() { // Sets the position to be somewhere inside a sphere // with radius 5 and the center at zero.

transform.position = Random.insideUnitSphere * 5; } }