First, just use a search engine to get the model. Try this for the search string:
"free dodecahedron 3D model"
Next, once in Xpression, you can hover text fields over the faces. Now you have our dice.
Make several scene directors giving different roll animations.
Use VB and create an "on prepare" or "on beforeonline" script that randomly assigns numbers to the face.
Then put a script in you transition IN scene director that randomly triggers one of the scene roll directors.
https://learn.microsoft.com/en-us/dotnet/api/microsoft.visualbasic.vbmath.randomize?view=net-7.0
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Azathoth
Son of Cthulhu
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