Standard learning procedure, repeat…
There are many content examples for that sort of game you plan to do.
from my point of view HUD stuff is more complicated then other stuff.
Set up some triggers, train bp communication, then repeat.
When you get stuck because of problems and aggro starts to grow, take your bicycle and ride your frustration out of you.
So many times i was frustrated, but then i did modeling stuff, basic material stuff (love panning, masking).
I shut down UE4, was frustrated, did something else and then pop “hey you can try this”, starting UE again, problem not solved, shut down again, infinite loop.
Two days is nothing for a beginner!