This Unreal Engine 5.4 video is about setting up the Projectile Blueprint, and shooting from the Turret Tower.
We start by building the Projectile Blueprint, including a function to check (and doublecheck) if the projectile is in range of the target, as well as moving it towards said target. We then Spawn the Projectile Actor as appropriate, sending along the Weapon’s Target. Lastly, we ensure the Static Mesh is facing the proper direction, and also adjust it to match it’s movement direction.
https://dev.epicgames.com/community/learning/tutorials/43EG/unreal-engine-20-turret-tower-shooting-bullets-let-s-make-a-tower-defense-game