Our sellers provide visitors only. You can buy traffic and send them to your fiverr Gig. If someone interested, the will definitely order your gig. How many sells you will get that all depends on your offer, how attractive it is to the potential customer, what benefits you offer to your audience etc.
Here is a detailed tutorial with a video about buying traffic on Udimi https://udimi.com/help/buyer/how-to-buy
Please ask Udimi Live Chat if you still have any questions after reading the tutorial.