Hi Naresh,
Yes i have the solution
Ex:
If you want to redirect to contact us page after azure AD B2c sign in follow below steps
1.Create a new we template and page template
2.Web template use below code
<div id="mainContent" class = "wrapper-body" role="main">
{% include 'Page Copy' %}
{% if user %}
<script>
window.location.href=‘~/Contact Us’;
</script>
{% else %}
<script>
window.location.href=‘~/’;
</script>
{% end if %}
</div>
3.Create a page template using above web template
4.Now Whatever the page it is showing after azure ad b2c sign in, for that page add this page template(Ex: Now homepage is landing page, but we need to change it as a contact us page)
4. So go to homepage and add above created page template.
5.Now check automatically whenever sign in it will redirect to contact us page.