The below logic is to check to see if a note exists for today's game.

Creates a note called
"Dice Roll Log XX/XX/XX"
for today if one doesn't already exist.

Creating Result Variables

Setting and generating "Number of Dice" Menu.

If you need more or varied dice quantities, just add a number on a seperate line in the below text box.

Setting and generating "Type of Dice" Menu.

If you need more or varied dice types, just add a number on a seperate line in the below text box.

Had to make the variable NumResult1 a text variable to show up in the final result. So I added steps in the repeat to translate it to and from text for calculation purposes.
Could make the shortcut more efficient by adding a numeric variable, and converting outside the repeat loop.

Calculating Highest Die

Calculating Average of Dice Rolls

Calculating Lowest Die

Date & formatting is for the line item time-stamp.
(Keeping your rolls honest.)

Putting it all together.

Set both below Find Text as a regular expression. If your low die was 2 and you had 20 it would place the low arrow between the Two and the Zero