Here is the example for to customize the “Form” Embed code script.

Updated script in view file
getContext: function getContext() {
//@class JJ.GetInTouch.getIntouch.View.Context
const script = document.createElement("script");
script.setAttribute("type", "text/javascript");
script.src = "https://js.hsforms.net/forms/embed/v2.js";
script.addEventListener("load", () => {
hbspt.forms.create({
region: "na1",
portalId: "23130323",
formId: "22b95edc-a15c-4996-af4c-d32d6650a3a5",
target: "#myForumContainer",
});
});
document.head.prepend(script);
return {}
}
Updated .tpl file
<form id="Get-In-Touch">
<body>
<div class="container">
<form action="/action_page.php">
<div class="title_THR">
<h1 class="GetInTouch_Title">Get In Touch</h1>
</div><br><br>
<div class="Get_in_touch_mian_container">
<div id="myForumContainer"></div>
</div>
</form>
</div>
</body>
</form>
As per requirement we need to give styles.