S pass application after certificate verification

Dear Experts,

My Indian agents told us I applied s pass for 80 persons on August 3rd week and 68 got certificate Verification passed on 27/11/2017.
My question is How long will take for visa approval from mom once after certificate Verification?

MoM takes anything between a few weeks and over three months to process an S-Pass application.
They do not show or tell the timing of an internal "certificate verification" step, so I suspect your agent is not honest. Did they charge you for the S-Pass application? If so, they are certainly cheats, as all fees must be borne by the employer, as per Singapore law.