Make it yaself !
-- Kidding aside I know Mac so I wasn't being an ass!
If you want to code this though go through each letter separate it to its own variable then use a random number to decide the order in which your variables are combined in to a single variable. That variable is then presented to the user as the 'Scrambled' word. Your bot already has the original word so it knows which one the users should be saying.
If you want to make an Anagram game where it takes 1 word and makes another word out of it your have to get a dictionary of words and do something with that. Like Word Finder.
