Drag and drop ProgressBar Control from toolbox on the window Form. By default maximum value of ProgressBar is set 100 and minimum value is set 0 and this value can be changed.

Code:

Public Class Form14
  
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
      'Progressbar will show progress bteween max and min value
      While ProgressBar1.Value < 100
      ProgressBar1.Value += 5 'progressbar value will increment 5 in each step
      End While
 End Sub
  
End Class

Run the project

When you click StartTime button then ProgressBar will start.