how to set the height of a scrollbar in Tkinter?

I have a table that is linked to the scrollbar. It works but the height of the scrollbar is very short. how can I set his height?

class table(ttk.Treeview):

    def _init__(self,frame,scroll_width,list_height,side,x_crol,y_crol,lable_place_x,
                               lable_place_y):
        self.side = side
        scroll = Scrollbar(frame, orient="vertical", width=scroll_width)
        scroll.pack(side=side)
        scroll.place(x=x_crol, y=y_crol)
        ttk.Treeview.__init__(self,frame, yscrollcommand=scroll.set, height=list_height)
        self.pack(side=LEFT, padx=lable_place_x + 30, pady=lable_place_y + 50)
        scroll.config(command=self.yview)

    scroll_width=20
    tab_side=LEFT
    x=650
    y= 160
    frame=hospitalFrame
    list_height=20
    c = 80
    
    lable_place_x = 80
    lable_place_y=70
            
    hospital_tabel=table(frame,scroll_width,list_height,tab_side,x,y,lable_place_x,
                         lable_place_y)
    
    hospitalFrame.pack(fill='both',expand=1)