index.js

let homeScoreEl = document.getElementById("home-score")
let guestScoreEl = document.getElementById("guest-score")
let homeScore = 0
let guestScore = 0

function reset(){
    homeScore = 0
    guestScore = 0
    homeScoreEl.textContent = homeScore
    guestScoreEl.textContent = guestScore
}

function increment_home1(){
    homeScore += 1
    homeScoreEl.textContent = homeScore   
}
function increment_home2(){
    increment_home1()
    increment_home1()
}
function increment_home3(){
    increment_home1()
    increment_home1()
    increment_home1()
}
function increment_guest1(){
    guestScore += 1
    guestScoreEl.textContent = guestScore
}
function increment_guest2(){
    increment_guest1()
    increment_guest1()
}
function increment_guest3(){
    increment_guest1()
    increment_guest1()
    increment_guest1()
}