How to apply uni-directional force to a rigidbody

Hello,

First of all, i'm sorry if this was asked before. I just don't know exactly how to explain it.

What I have now is my character and a wall to which I apply Voroy destruction alghoritm. I want that when I cast a spell, like a shockwave for example, to send this force on one direction in front of me toward the wall. So that it will shatter and has the pieces blown away.

How do I apply this force and the script should be on the wall or the character.

Br and thank you