There is no one-size-fits-all answer to this question, as the amount of time it takes to get a life insurance policy depends on a number of factors, including the type of policy you're looking for, the insurance company you're working with, your personal circumstances, and more.
That said, it is generally possible to get a life insurance policy within a few weeks. The exact timeline will depend on the insurer and the type of policy you're interested in, but in most cases, you can expect to have a policy in place within a month or so.
Of course, the best way to find out how quickly you can get a life insurance policy is to speak with an insurance agent or broker. They will be able to give you a more tailored answer based on your specific situation.