Modernizing inline script tags for templates & JS API

I have a simple .html file:

<script type='text/x-handlebars' data-template-name='/connectors/below-site-header/oprs-top-container'>
    <div id='WW_T_D_1' class='oprs-top-leaderboard'></div>
</script>

I’m kind of confused with different ways to do this migration. Appreciate if someone explains what to do. Thanks