Where can i get Certificate

I have generated the Private Key And the CSR is also generated automatically , now i need to get the Certificate Key. How to get it ? Please help

How can I get free SSL certificates for my own domain?
The best way to get free SSL certificates is using the free SSL Certificates tool by InfinityFree. This tool also uses Let’s Encrypt to get free SSL certificates, but with a few additions and tweaks to make it work with free hosting.