Applied for credit card from Standard Chartered but got rejected. How long should I wait till the next application? How do I check with the bank about my rejection?

Hey I was in similar situation as you. One of the reason could be you applied for too many credit cards at the same time and hence they rejected you. You may try citi cash back+ which has similar benefits from the one you applied from.

Also finding out what is your credit score might help. You may also purchase your credit report for $6+ from Credit Bureau Singapore here: https://www.creditbureau.com.sg/how-to-get-my-c...

Unfortunately the reasons for rejection will not be shared with you by the bank nor can they help to advise you. This is one of those black holes.

You could try again after a few months/a year or just apply for another card from another bank that has similar benefits.

Hopefully you haven’t been spamming the credit card applications.