According to the above diagram find the net force?

When two individual forces have the same magnitude but opposing directions, the forces are said to be balanced.

In above diagram we can see force$F_1$ and $F_2=20 \mathrm{N}$
Then here force direction is in same direction then, $F_1=20 \mathrm{N}$ and $F_2=20 \mathrm{N}$

We know that net force, $F_{\text{net }}=F_1+F_2=20+20=40 \mathrm{N}$.
In diagram we can see both force direction is right side hence object moves in right direction.
Hence, the net force acting on the object is equal to $40 \mathrm{N}$ right.