Hello. Thank you for reaching out help in Apple Community.
For short, yes, it is fixable, and it will be worth fixing according to your situation.
It seems like your MacBook's screen is damaged, and does not show a part of the screen. Here are some solutions:
First of all, is to go to Apple Support for fixing the screen. Apple will fix the screen for you, but may cost a lot, and it depends on the situation. However, if you bought your Mac in 1 year, Apple supports free coverage. You could check out your Mac's coverage by going to System Settings, "General", and "AppleCare and Warranty".
Second of all, is to use the "Self-Repair" kit released by Apple. It is way more cheaper and convenient than the first method. But if you have zero knowledge to technology, it is not recommended for you.
Lastly, is to use third party repair kits. They are way more cheaper than any of the options above. But as it was mentioned, if you have zero knowledge, don't try. And if you are aware of afraid with screen's resolution, or "Unauthorized display" (keeps showing in System Settings) this is not that recommended (since this is not authorized by apple).
For more information about Apple Coverage, check out the link below:
- AppleCare Products - Apple
- Check Your Service and Support Coverage - Apple Support
To learn more about "Self_Repair" Kit, visit the following website:
- Self Service Repair - Apple Support
- https://selfservicerepair.com/home
Thanks.