If you're not sure whether or not your insurance policy covers commercial use, you should contact your insurance company to ask. They'll be able to review your policy and provide clarification.
In the event that your insurance policy does not cover delivering food, you could be held personally liable for any damages or injuries that occur during an accident. This could include damage to your vehicle, injuries to yourself or your passengers, and damage to property belonging to others.
To avoid any potential issues, it's important to make sure that you have the appropriate insurance coverage in place before you start delivering food for a third-party company. This will protect you financially in the event of an accident and ensure that you're not held liable for damages or injuries.