How to Work with dynamique Widget

Hi everyone! first of all i might not be clear with my question but here in more details :

I’m currently trying to implement in my game a Scoreboard, for now i can make it appear when i Press tab or when my Health is at 0 my Scoreboard will be shown in my game but, each time the player lose a life ( they start at 10) I want to see it in real time, so when i press TAB at the beggining my HP is at 10, but when i get it, it will go down to 9, how to do that within my widget and with the blueprint?

thanks !