Look for CoinDCX’s own notice or letter: it should say what of yours was involved. Keep it.
Nobody has said yet what was exposed. If CoinDCX has a password of yours, change it now to be safe.
Expect scams that use your details: calls, texts or emails pretending to be CoinDCX, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.