It all depends on the condition of the market, during the previous altszn, I was able to double some funds in just 2 days and that's by randomly choosing any coin within the top 20 on CMC and holding it for some hours, but things has changed right now, you cannot make money that way anymore and if you don't have any technical knowledge about trading, I would not advice you to try it unless you would just drive yourself deeper into debt when you end up losing all out of desperation.