Of course you have seen the shape of a force. The wall does not deform, it heats up... and the shape of the heating up would be related to your force but to the naked eye... you would see nothing...
You want to see a shape... push on the side of your car door... it deforms as a response to the shape of your force... if you use a linear head like on a chisel, and wack your door (not recommended) you would see that the distortion of the metal would match the shape of the force applied to it, in this case a linear force along the head of the chisel. In the case of point sources against a plane, they always deform as some almost parabolic shape.
That of course is if the object just deforms and does not break.
But look at an assembly line or watch the show something like "How stuff is made." and all you see is the shape of forces.
A force is some acceleration applied to a mass. The geometry of the interaction of the 2 is supremely important to understanding what is going on.