A little more clarification is requested here. If you are talking about getting your premium back because you cancelled your policy during the free look period or you just cancelled which you paid an annual premium, etc. and you want the unused balance back, give it 2-3 weeks.
If you are requesting monies from the cash value in your policy, then after you fill out the requested paperwork, send it in, then I would expect your check to come within 2 weeks.
Are you referring to the payment to the beneficiary? If so, they will require some things from you first; but if all of their requirements are met, they are required to pay out within a specified period of time, as specified in the policy. Remember that the policy had to be in force at the time of the policy holders passing, for them to pay out. If you would like to discuss this more, contact me, I'd be happy to help, but your best bet is just to contact MetLife directly, and ask.
State regulations determine how long MetLife can review the death claim before paying the beneficiary proceeds from a policy where the insured person died. In many states, the carrier is allowed 30 days to review the claim. Most claims are paid to the beneficiary or beneficiaries within 60 days.
If you are requesting monies from the cash value in your policy, then after you fill out the requested paperwork, send it in, then I would expect your check to come within 2 weeks.