Web Component Usage Bolt progress-bar is a web component, you can simply use <bolt-progress-bar> in the markup to make it render. 
<bolt-progress-bar value=65></bolt-progress-bar>
Prop Usage Configure the <bolt-progress-bar> with the properties specified in the schema. 
<bolt-progress-bar value=7 value-format="step" max=12 animated></bolt-progress-bar>