We can put the walls of our container anywhere inside the gas, and the force per unit area (the pressure) is the same. We can shrink the size of our "container" down to a very small point (becoming less true as we approach the atomic scale), and the pressure will still have a single value at that point. Therefore, pressure is a scalar quantity, not a vector quantity. It has magnitude but no direction sense associated with it. Pressure force acts in all directions at a point inside a gas.
Formula
Mathematically:

  
    
      
        p
        =
        
          
            F
            A
          
        
        ,
      
    
    {\displaystyle p={\frac {F}{A}},}
  where:

  
    
      
        p
      
    
    {\displaystyle p}
   is the pressure,

  
    
      
        F
      
    
    {\displaystyle F}
   is the magnitude of the normal force,

  
    
      
        A
      
    
    {\displaystyle A}
   is the area of the surface on contact.Pressure is a scalar quantity.