Hi Harshida,
Thanks for contacting Syncfusion support.
We checked your requirement to render EJ1 Rating control in Asp.Net Core platform. We have prepared a sample with the shared code and attached in the following link for your reference.
We suspect that some required namespaces, scripts, and CSS were missed in your project. Refer to the following UG link for required configurations to be made for rendering EJ1 controls.
If the reported problem persists, kindly share the complete code(web.config, cshtml page, Layout page) of your project along with the product version so that we can check and assist you promptly.
Regards,
Keerthana R.