Longer than a bank transfer, because your money is being converted into actual investments.
One-off FPX deposit — typically visible in the app within about 2 business days, and fully invested within about 4.
First recurring deposit — longer, because the mandate has to be set up first.
Later recurring deposits — faster, usually a couple of business days after deduction.
Business days exclude weekends and public holidays, so a Friday deposit effectively starts moving on Monday.
If money has left your bank but nothing appears after several business days, contact support with your transaction receipt.