WHAT IS THE Covalent bond for nitrogen and flouride with the work with
what is the covalent bond for Nitogen and Fluride
Can you clarify the question?
I am guessing that this is a Lewis Structure question... There will be a double bond between N and F. One of F's valence electrons is "donated" to N, (I think the convention is to draw an "X" through the F electron and an arrow leading to the position of N to which it was moved) then you are able to represent the second bond.
As Dick B. commented, the formation of an NF molecule is highly unlikely due to the electronegativity of Fluorine. So, this structure is strictly hypothetical.