Why doesn't object repulsion work?

Question

Unity

Hello, there is a player and an object that should be repelled if the player touches it. It seems that everything was logically done, but when it touches, the object does not repel from the player. Now the script looks like this:

public Rigidbody rb;

void Start()
{
rb = GetComponent();
}

void OnCollisionEnter(Collision collision)
{
rb.AddForce(0f, 0f, 15);
}

Tried to do and through the trigger, all the same it is impossible.
Player

Inspector: Object Inspector: