Various - My longest period was from 2019 to the present and I have yet to hear back. When I applied for my current job, the longest period before hearing back from the employer was a couple of hours. 

what position for what career - I assume architecture? 

My advice is to keep applying , and assume the worst. 

its a game of luck

I applied to a firm, interviewed, and they got back to me in 3 months. By that time I had started my current position and it was too late... But then again, why would you want to work somewhere where time passes so slowly. Even if its a good firm, I'd value punctuality pretty highly.

The longest period I have experienced was approximately 4 months between a job application, first interview, and offer/rejection. During this time, I had to follow up with the employer several times to ensure my application was being reviewed. Ultimately, I received a job offer and I accepted it.