Yes, if we are a trader, then what you do is not panic, but relax when facing a market crash like this. And to get profits, usually if the market has really dropped, traders will use a SHORT strategy to get profits from their trading. It is not safe enough to take a LONG position.
But, how much profit you get will vary depending on funds, effort, strategy, and analysis of the market. What is clear is that this is not an easy thing to do.