First you need to add your website in different search engines. By using Google webmaster tool you can index your website to Google. You can access webmaster tool by using Gmail account.
First of all, getting your website indexed within 3 days is not possible.
It is possible for a site to get indexed by the search engine within 4 days to 4 weeks, but at times it may also take time. This time usually relies on the popularity of a site (i.e. any inbound links), quality content type and how the pages interlink. So here are some advices that I hope can be helpful to you:
• Check for the server responses, use tools like pingdom to check for the response
• Put the original and actual content
• Create an account for Google Webmaster Tools and verify your site
• Use quality backlinks
• Use social media to promote your site