Hi! Based sa experience ng isang mum friend ko, usually after nag-apply ka ng MAT2 through GCash, it takes around 3-5 working days for SSS to process and approve your application, pero minsan mas mabilis depende sa volume nila. After approval, you'll receive a confirmation message sa phone mo and then you can start making contributions through GCash, yung app mismo ang gagabay sa iyo kung paano mag-transact, super convenient talaga!