Watching ads for money, eh? That sounds familiar, like something that's on that GPT site Prizerebel.
Anyway, where are you watching these ads at? Depending on the ad network, you may be able to get away with using a basic auto-clicker. You can download them or code one yourself.
If the ad network is a bit more advanced, then you'll either have to code/hire some to code a bot for you or find one on the web.