Welcome to NR Atul, you need to go to your Dashboard and 'recalculate' manually for checking your balance. Minimum threshold Rs 600 must be there to generate invoice. For referral, you won't get that much amount unless you referred many which they become member here and contribute for a long time.
Recalculate URL: http://www.newrecruitments.com/members/dashboard.aspx?pageaction=calculateearnings
Referral guideline: http://www.newrecruitments.com/help/2731.aspx