npm i vue-scroll-progress --save

yarn add vue-scroll-progress

CDNs

main.js

// YourComponent.vue or main.js for global usage
import Vue from 'vue'
import VueScrollProgress from 'vue-scroll-progress'

Vue.use(VueScrollProgress)

Use in component

<!-- .vue template -->
<template>
  <VueScrollProgress></VueScrollProgress>
</template>

Set progress bar style, and customize as you want(Optional)

<style>
/* play with some lines below */
#progress-container-el {
  /* background */
  background-color: #f4f4f4 !important;
}

#progress-el {
  /* progress bar */
  background-color: red !important;
}
</style>