Dear Aspirant

SP is a post one get after becoming IPS.  IPS officers are selected through the UPSC exam. For eligible to give UPSC exam you have to first do graduation. I suggest do graduation in one of the subjects you have in your +2.

After your graduation you give UPSC exam which is 2 step exam + interview.

For more details refer to the link below:-

https://competition.careers360.com/exams/upsc-civil-services-exam

Hope this helps. Thank you.