How to add Hubspot embed Javascript code to wordpress file

I am looking to add this code in my wordpress website. Need to embed hubspot tracking in my website created using wordpress premium plan.

<script type="text/javascript" id="hs-script-loader" async defer src="//js.hs-scripts.com/44162148.js"></script>

Note: I am not looking to plugin, I want to add this code in my wordpress website.

Install the HubSpot tracking code scroll it to Wordpress section. It’s explained there.

you shouldn’t disclose that JS Script number. it’s unique to your installation of Hubspot and anyone copying that code and implementing it just for the fun it will scew up your data.

ALso, you can just use the Snippets plugin or any other plugin that let’s you add a code snippet to the header of your website.