To use jQuery with ASP.NET Core MVC, you can follow these general steps:

Include jQuery Library: Ensure that you include the jQuery library in your project. You can either download it and include it in your project or use a CDN link in your HTML file.

<!-- Using CDN -->
<script src="https://code.jquery.com/jquery-3.6.4.min.js"></script>

Reference jQuery in Your Razor View: Add the jQuery reference in your Razor view file (e.g., Views/YourController/YourView.cshtml).

<!-- Reference jQuery in your Razor view -->
<script src="https://code.jquery.com/jquery-3.6.4.min.js"></script>

Write jQuery Code: You can write your jQuery code within a <script> tag in the same Razor view or include it in a separate JavaScript file.

Example within Razor view:

<script>
    $(document).ready(function(){
        // Your jQuery code here
    });
</script>

Example in a separate JavaScript file:

// wwwroot/js/yourscript.js
$(document).ready(function(){
    // Your jQuery code here
});

Make AJAX Calls: jQuery is often used for AJAX calls in MVC applications. For example:

$.ajax({
    url: '/Controller/Action',
    type: 'GET',
    dataType: 'json',
    success: function(result) {
        // Handle the result
    },
    error: function(error) {
        // Handle errors
    }
});

Remember to replace '/Controller/Action' with the appropriate URL for your MVC action.

Make sure your project is set up to serve static files from the wwwroot folder if you're using an external JavaScript file. You can configure this in your Startup.cs:

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    // other middleware configurations...

    app.UseStaticFiles(); // Enable static files (wwwroot)
    
    // other configurations...
}

These are general guidelines; adjust them based on your specific project structure and requirements.

Edited