Hi Shilpa!
It sounds like you had some questions about designing a custom progress bar in your Storyline 360 course! Take a peek at this example to see one way to achieve that:
Also, you mentioned adding a progress bar to your Master Slide would conflict with the screen recordings you have within the slides themselves. I'd be curious to take a closer look at your .story file to see if there's an easy fix for that!
It looks like you've attached the entire zip package to your post, but we would need just the .story file by itself in order to access your course. You can share it here in the discussion or privately through a support case.
Looking forward to hearing from you!