It says ‘Please fix compile errors before creating new script components.’ When I tried to follow what this person did here
(2:17) IDK how to fix it
This message means that something couldn’t compile, likely because you have an error somewhere in your code. To see the error, take a look at the Console Window (Learn). It will tell you in which script, at which line the error happened and what type of error it is.
Hint: Since you’re new to Unity, you may want to check out the Unity Learn site:
https://learn.unity.com/
If you have already existing scripts fix errors in them, before adding script to gameobject