Backlight problem of screen

2 days? So brand new, right? I ask it because forum ID'd your macOS as 10.15, with is almost 2 years.

Well, if it's new, it's still under warranty. Call Apple Support Contact Apple for support and service - Apple Support and then book a visit to an Apple Store or Authorized for a proper check.

If older, check if your Mac is eligible to this service program 13-inch MacBook Pro Display Backlight Service Program - Apple Support.

Better this way, so you can get it fixed/replaced under warranty.

I understand your frustration, of course, but manufacturing processes aren’t perfect for anything, right?

I got an iPhone in January that arrived already dead. Had to wait a few more days for a replacement. What to do? 🤷🏻‍♂️

But don’t worry, Apple will get things right for you!