Here's the most comprehensive reply you will get:

The amount of time they take to get back to you is very industry-specific. For jobs in the legal industry, if you don't get a call back in a few days you didn't get it. For finance, delays of up to 2 months is not uncommon.

However, the point remains that you should always keep applying in the interim. It's exhausting, but you should always keep going until you sign that offer.