Whitelabel wordpress site

Hi All,
I am looking for details on how to make a shopify version of my website https://grahambusinesssolutions.ie/
Two of my business associates would like to have the same website , with their logo and contact information at the header.

Can you please outline the steps involved, and quote me for this work.
Please let me know if you require any further info.

Thank you,
Fionn