Number of questions: You can measure the number of questions received every day and the respective number of times the bot provided the correct answer to the questions
Ticket Deflection: You can start looking at the overall ticket deflection percentage of the bot, that is, how many times the bot helped your customers solve their own problems avoiding it to be created as tickets. You will be able to see the breakdown of the missed questions as well.
Number of users: You will be able to monitor the number of unique users interacting with the bot on a day-to-day basis.