If delivering for small items only like for salon car, no need to get the commercial insurance. However, if the vehicle is a van, pick-up or truck, then it is required to have a commercial insurance for the vehicle. In your case, you can just purchase the standard private car motor insurance. You may submit your details here: https://www.motorist.sg/car-insurance and our insurance consultant will be able to assist and provide you with a non-obligatory quotation.