I bought a RHEL - 2-sockets with 1 virtual guest (Self-support Subscription 1 year) price $ 349. I want to know can I install it on my server which has 4 six core processors

Hello,
I bought a RHEL - 2-sockets with 1 virtual guest (Self-support Subscription 1 year) price $ 349. I want to know can I install it on my server which has 4 six core processors (Dell PowerEdge R810 Intel Xeon 6 Core 4 x CPU 1.86GHz ( E7530 ) 128GB) or I can use this subscription only on server with 2 processors? Also I want to tell me can I install 2 websites on my server and what exactly bear in mind this "1 virtual guest"?

Thank you in advance.
Niko