if I want to create cluster how to create cluster for e.g sccm server so it needs to install on both server? or one server is is enough since it is shared location sccm 2012 server includes sql 2012 installation and sccm installation so it is possible to create cluster?

Follow procedures here

http://blogs.msdn.com/b/clustering/archive/2012/05/01/10299698.aspx
http://www.pythian.com/blog/how-to-install-a-clustered-sql-server-2012-instance-step-by-step-part-1/
http://www.pythian.com/blog/how-to-install-a-clustered-sql-server-2012-instance-step-by-step-part-2/
https://www.youtube.com/watch?v=1HCnuzb2LSk
https://www.youtube.com/watch?v=t7EzPaRQjQU
https://www.youtube.com/watch?v=kMs34c_7BUs

Regards

Milos