Unity 2d simple c# shooting script

Can somebody tell my a simple c# shooting script that fires a bullet at 1000 units (whatever the speed is), and when the bullet collides with something, it sets the object that it collides with’s variable health to 0, and deletes the bullet. The bullet needs to shoot straight on the x axis, meaning that it doesn’t have a rigidbody. Please help!

This is what you need

Hope it works!