kendo config in asp.net core

i dont know how use kendo in asp.net core project

I added js and css files to my project and installed Telerik on my computer and referenced the dll files

I'm trying to use the upload file component and this error occurred:

'IHtmlHelper' does not contain a definition for 'Kendo' and no accessible extension method 'Kendo' accepting a first argument of type 'IHtmlHelper' could be found (are you missing a using directive or an assembly reference?)

my project is asp.net core 3.1 and there is not any web.config file

 <div class="demo-section k-content">
       @(Html.Kendo().Upload().Name("files").HtmlAttributes(new { aria_label = "files" }))
       <p style="padding-top: 1em; text-align: right">
         <button type="submit" class="k-button k-primary">Submit</button>
       </p>
 </div>

thanks