The main goal of the tutorial is to create a simple and flexible Health System by making a custom Health Component in C++ that can be attached to any Actor in the scene that should take/receive damage in our game. It will also have two Delegates (Events) that will be triggered whenever we update the health and when it reaches 0.
Later (in Part 2), we will set up a basic health bar system using UMG (Unreal Motion Graphics) and also replicate the “spinal health system” similar to the RIG in Dead Space.
https://dev.epicgames.com/community/learning/tutorials/VpwX/unreal-engine-health-bars-in-unreal-5-part-1-creating-a-health-component-in-c