Is it possible for an object to be travelling with a non-zero velocity if the object experiences a net zero external unbalanced force? If yes, what is the magnitude and direction of the velocity of the object?
Yes, that is certainly possible. We do not need for force to be acting on a body for it to be traveling with some velocity. This one of the standard deductions made under classical mechanics. In ideal conditions, force is not required to sustain a bodies velocity but it can alter it.
In a frictionless, vacuum environment a body will move with the same velocity it started out with, with no force acting on it.