Question

how is force related to pressure

Answer 1

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
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Answer 2

Pressure (symbol: p or P) is the forceapplied perpendicular to the surface of an object per unit area over which thatforce is distributed.
when we exert force on an object, the force is divided over the area of the object thus, pressure is formed. so without a force there would be no pressure. 
that means force is related to pressure.

Simple example to convey you,

If one object is there, we require some force to displace this. That is total force we applied to move this object.

Pressure is nothing but the above applied force per uint area(cross section area) , to move that object.