If someone adds you as an authorized user on their credit card account, and they supplied your SSN when adding you, it would probably show up within 30 days. Of course that means that you would have...
When your creditor updates your new trade line which usually takes about 30 days
The time limit is usually 30-60 days but that really depends on the creditor. They have no legal time limit in which to notify CRA's.
If you do it by mail then within a week. If you do it online then it's instant.
the question should be how long does it take for me to get ur mom in bed