as i said in the title , so will this upgrade will get me more orders or …
No, the upgrade won’t automatically get you more orders.
It tells prospective buyers that you have completed a certain amount of orders successfully within the Fiverr system. This may in turn encourage buyers to spend money with you, rather than a seller with no level. But there are no guarantees here.
Just keep doing what you’re doing. Don’t focus too much on the levels, just focus on generating more business and keeping your customers happy!