Impressions: These are the number of times your Gig appeared in Fiverr's thumbnails (i.e., on the homepage, category/subcategory page, search, and user page).
Clicks: These are the number of clicks after a user saw it once on the homepage, category/subcategory page, search, and user page. -Fiverr help.
So, The more your impressions and clicks will be increased, you have the possibility to get an organic order from Fiverr.