Make a backup of your project. Then download the file linked below.
Then close the project and go to your project files in windows explorer. Then navigate to the Blueprints/Widgets folder and paste in the file you just downloaded.
Then startup your project again and go to the Widgets folder and open the BP_StatText widget and compile.
Copy the videos below inside the BP_ItemTooltip widget.
Add the highlighted nodes shown in the image below, location at the top of the image.
If you want to adjust the text sizes or settings for the stat text you can do this in the BP_StatText widget.