There are several pages related to Dice:

• Dice Reference - How to create all kinds of rolls using the Roll20 dice-rolling syntax
• 3D Dice How to use and enable 3D Dice
• t Dice Rolling GUI, a tool found in the Toolbox on the left side of the screen
• q Text Chat-tab, where you can see dice rolling results and/or type your roll directly. Found in the right-side Sidebar.