Question

How many Sigma and pi bonds are there in a molecule of tetracyanoethene

Answer 1

Hey buddy
The cyano groups have two pi bonds and one sigma bond. The ethylene moiety has one pi and one sigma bond. 
That's a total of 9 pi and 5 sigma bonds.
Hope it's helpful

Answer 2

The structure is as follows.   
                
(N≡C)$_{2}$ - C = C - (C≡N)$_{2}$

No of б bonds = 7
No of π bonds = 9