I am stuck on this challenge can someone help me?

In short, JavaScript does not understand what you mean because when creating function and declaring parameters, parameters should be name rather than value.

Your code translates to something like this.

function max() {
  ? = '1';
  ? = '8'
}

function in general works like this.

function name(arg1, arg2, ...) {
  ...body...
}

What arg1 and arg2 does is it takes value and bind it to name just like variables. To use them inside the function you simply refer to their name like this.

function sayName(name) {
  return name;
}

//console.log() echo values inside parenthesis to your developer console. 
//F12 -> console in most browsers.
console.log(sayName('myName')) //myName

To give you a hint you can start from here.

function max(number1, number2) {
  //Write your code.
}

Let me know if you got it.

Also, if anyone notice any errors teach me since I'm learner here as well.

JavaScript arguments are like variables, so they have to start with text and no quotes. Answer:

function max(number1, number2){
  if(number1>number2){
    return number1;  }
  else{return number2;}       }