Hank here from Shopify!
Getting paid with Shopify payments varies based on your payout schedule set within your admin (Settings > Payments > Shopify Payments > Manage).
Then it also depends on your pay periods of your country. As you mentioned you are in Singapore, the pay period is 4 business days. The way this would work is if you are set to get your Shopify Payments payout released on a Monday, it should be in your chosen bank account that Friday, unless there was a bank or public holiday (if your bank is closed), which may delay the payment.
You can also see the payout status, which will be pending, then will turn into sent, and then paid when the bank confirms receipt, and you can see this in (Settings > Payments > Shopify Payments > View payouts).
Let me know how you get on with this, or if you have any further questions!
All the best,