Question

if two forces act on a body in opposite direction in which direction will the body move

Answer 1

See if your father pulls you from left and if your mother pulls you from the right then in which direction will you move ?
obviously whoever has more strength you will move in that direction
so the answer to you question depends on which force is greater , it will move towards that direction
edit : if both the forces are same then the body will not move

Answer 2

it s depend on the magnitude of force.
but if two are in opposite directions then the body will move inwards it or it will be compressed