The pick up could be as easy as the add event overlapping.
You could create a blueprint out of the static mesh and create a trigger box/sphere around it. Then add event begin overlap. Then create an event dispatcher: call in your blueprint to be able to communicate with the level hud.
Now in the level blueprint: add your event dispatcher and use this for… im not really sure what you want from know on. If you could be more precise i can draw the blueprint for you 