args are mutable, so you can just use n directly and decrement it in your loop without need for an extra variable

Definitely looks more "code-y" but uses extra memory for variables and unnecessary loops.

while numbers.reduce would allow for scores of any length, that is not necessary for the prompt requirements and is actually overengineered for this task.

I also thought of using a switch, but as you can see by the comments here, using switch(true) and then doing evaluations in each case is kind of an anti-pattern that can be hard to read and debug.
I would avoid and look for one of the other conditional options in this board.

destructuring scores into an array inthe function definition was a good move

Agree.
Remove the else and just return the else value, since the if condition returns if hit.

Also, pairing an arrow function with a ternary will allow you to return the value directly and keep it even more concise

This is correct and achieves the desired result, but:

1. clean up indentation
2. use built in prototypes for native data types (string.replace() in this case, but also for arrays, objects, numbers, etc in the future). This will keep your code more concise and readable