You will earn KrisFlyer miles from your Pelago booking(s) after the Activity Date has passed. It may take up to a week (or 7 calendar days) for this to reflect in your account.
Miles earned from your Pelago bookings will only be reflected in your KrisFlyer account on the Singapore Airlines official website:
Log in to your KrisFlyer account on the Singapore Airlines official website.
Scroll down to "Recent Activities".
Click on "See complete statement".
If your Miles haven’t been credited as expected, please check our guide under "I did not earn KrisFlyer miles for my booking." for more details.