If what you need the money for is a life threatening issue, then you have no option but to take a loan from the bank, friends, relatives, business partners, spouse etc, if you're looking for someone to hire you based on your skills, you wouldn't earn that much and the whole process(interview, assessment of your skills)before you get hired may not be in tandem with your 3 days ultimatum.
Unless you're willing to do risky or degrading jobs
Risky jobs, theft in particular seems to be the way people seek easy money this days, and no matter the condition, that's never something anyone should even think of, it has damning consequences.