Without knowing more information, like which company you are with, this is impossible to know. My suggestion is to talk with your HR people about this.
Most profit sharing plans have a vesting schedule (your percentage of ownership in your account goes up each year) so that each year that you remain employed, you own a greater percentage of your profit share balance when you leave the company. Eventually you are entitled to the entire balance. Plans vary from company to company so you need to check your plan documents, through your company's online plan portal (if they have one) or by contacting your company' HR department or the person in charge of the plan.