Projectile Damage

Hello, could someone tell me how to make an incoming projectile to cause damage to a player ?
I’m new blueprints .
Thank you

I suggest you start here. There are likely other tutorials out there, too.

I learned how to do that by following this video tutorial

If you are new to blueprints I suggest you follow the whole video series from the beginning and generally take a look at the “Build a Game” section in the video tutorials.