If the bot's files are all stored in a folder, the likely intention is that you copy the mIRC.exe file, and paste it into the trivia bot's folder. Then double click the mIRC.exe inside the trivia bot's folder, and see if that works.
mIRC bots usually run as separate clients, so they have their own mIRC directory.
All good bots/scripts come with documentation of some description, look for a readme file, or try the website where you got the bot from. We can't really help you with a 3rd party script, you shouldn't use scripts if you don't know how they work.
Regards,