If you need to download a copy of your policy, it will depend on what type of policy you have and who is providing your coverage. Generally speaking, you'll need to go to the insurer's website or contact them directly to get a copy of your policy.
For example, if you have car insurance provided by a major insurer, log in to their website and look for "My Policies" or "Manage Policies". You should then be able to find your policy and print a copy.
If you have a different type of policy, such as life insurance, you may need to contact the insurer directly. They should be able to provide you with a copy of your policy and answer any other questions you may have.
Ultimately, your best bet is to contact the insurer to find out exactly how to get a copy of your policy.