You can write your topic however you want, but you need to answer these questions:
What do you want to achieve?
I am trying to make it so that if you are a specific player, my ID is in there, then it does something.
What is the issue?
My error is that it can’t define the Humanoid.
Here is the script and the Error I am getting:

What solutions have you tried so far?
Asked some friends, they couldn’t help
The script is a normal Script, in Server Script Service. I am trying to make it so that if this player is a specific player, for example, my roblox user ID is in the top part, then it will change the color of certain things. My error is that it can’t define the Humanoid