Well it depends a lot on how you have built your system, but as for a tooltip I recommend watching this video and see if you get any ideas from it:
Essentially what it does is detect on mouse over, then casts to a tooltip widget which is reusable, so no need to create a new one, and simply updates the information. Here’s a highlevel view of the type of script in the tooltip widget:
It’s just going through the same process for multiple values, not too bad. But the casting happens by the inventory system, through the slot widget in the inventory which detects the mouse over, which then casts to the tooltip widget the item class and the tooltip widget then extracts the info from that class. If that makes sense.
Just watch the video is my suggestion.