Bluish spots on my MacBook Pro screen

Hi Phearum_Seng,

Thanks for posting in Apple Support Communities. We know it's important to make sure your Mac is working as expected. It looks like you're seeing some blue spots on your Mac screen, and we'd like to see if we can help out.

Are they there constantly, or do they come and go?

Do you see these in all lighting conditions? How about when you start your Mac up, or start up in macOS Recovery mode? You can access macOS Recovery with these steps: About macOS Recovery

"Start up your Intel-based Mac in macOS Recovery

1. Restart your Mac.
2. Immediately press and hold one of the following key combinations until you see the startup screen:

• • Command-R: Start up from the built-in macOS Recovery System. Use this key combination to reinstall the latest macOS that was installed on your system, or to use the other apps in macOS Recovery.
  • Option-Command-R: Start up from macOS Recovery over the internet. Use this key combination to reinstall macOS and upgrade to the latest version of macOS that’s compatible with your Mac.
  • Option-Shift-Command-R: Start up from macOS Recovery over the internet. Use this key combination to reinstall the version of macOS that came with your Mac or the closest version that’s still available.

1. If you have multiple volumes on your disk, select the volume you want to recover, then click Next.
2. If requested, choose an administrator account, click Next, enter the password for the account, then click Continue."

Once you've started up in macOS Recovery, make note of whether the spots appear there or not, and then click Apple menu () > Restart to get back to normal.

Best wishes.