To make a claim on a life insurance policy, you’ll need to contact the insurer the policy is with. If possible, you should have the policy details to hand. There’ll be forms to fill in, and it’s likely you’ll need to supply the insurer with a death certificate. The insurer will guide you through everything.
It’s a good idea to tell your family if you have life insurance. Let them know the name of the provider and the type of policy it is, to help make the admin easier for them when the time comes.