Листинг программы:
from tkinter import *
root = Tk()
root.geometry("500x220")
# Закрытие окна
def close():
    root.destroy()
# Функция для Scale
def forget_s(event):
    global button
    if button == 1:
        b1.place(x=50, y=70)
    elif button == 2:
        b2.place(x=150, y=70)
    elif button == 3:
        b3.place(x=250, y=70)
    elif button == 4:
        b4.place(x=350, y=70)
    if s.get() == 1:
        b1.place_forget()
        button = 1
    elif s.get() == 2:
        b2.place_forget()
        button = 2
    elif s.get() == 3:
        b3.place_forget()
        button = 3
    elif s.get() == 4:
        b4.place_forget()
        button = 4
    l.config(text="Кнопка скрыта:" + str(button))

# Функция для Button
button = 4
def forget_b(number):
    global button
    if button == 1:
        b1.place(x=50, y=70)
    elif button == 2:
        b2.place(x=150, y=70)
    elif button == 3:
        b3.place(x=250, y=70)
    elif button == 4:
        b4.place(x=350, y=70)
    if number == 1:
        b1.place_forget()
        s.set(1)
        button = 1
    elif number == 2:
        b2.place_forget()
        s.set(2)
        button = 2
    elif number == 3:
        b3.place_forget()
        s.set(3)
        button = 3
    elif number == 4:
        b4.place_forget()
        s.set(4)
        button = 4
    l.config(text="Кнопка скрыта:" + str(button))

# Метка
l = Label(text="Кнопка скрыта:" + str(button))
l.place(x=200, y=20)
# Кнопки
b1 = Button(text="1", width=7, command=lambda: forget_b(1))
b1.place(x=50, y=70)
b2 = Button(text="2", width=7, command=lambda: forget_b(2))
b2.place(x=150, y=70)
b3 = Button(text="3", width=7, command=lambda: forget_b(3))
b3.place(x=250, y=70)
b4 = Button(text="4", width=7, command=lambda: forget_b(4))
b4.place_forget()
bclose = Button(text="Закрыть", command=close)
bclose.place(x=230, y=180)
# СкроллБар
s = Scale(orient=HORIZONTAL, from_=1, to=4, tickinterval=1, length=300, command=forget_s)
s.set(4)
s.place(x=100, y=120)

root.mainloop()