Question

give an example in which a force is acting but there is no motion and therefore no work done

Answer 1

Think about pushing on a wall

Very unlikely you are going to move that wall, so the forces are in equilibrium and there is no motion, hence no work being done on the wall!

Answer 2

Ahh that actually makes sense because of newtons laws, haha thanks man! :)

Answer 3

Or: consider the force that one leg of a chair exerts against the floor while you're sitting in the chair.