Ok, so I downloaded the Pooler in the ecosystem. I put the action "Quaternion Look Rotation" before the Pooler, in direction I put the "Hit Normal" of my raycast and I store the result (hitNormal, as quaternion).
Then I put a "Pooler Pool" in which I have my Bullet Hole prefab. Then a Spawn Pooler, in Position I have my Raycast hit point, but in rotation I do not really know what to put.
I tried with the Hit Normal of the raycast but it does not work.
So the Quaternion Look Rotation is useless here.