Accepting Clients-Project → without knowing anything about how to code and customize your Wix-Pages /Website is a very risky step.
At the end you will engage a CODER/PROGRAMMER who will cost you maybe a lot (depending on the programmer and the complexity of your project-setup).
If you are more a → WEBDESIGNER then a PROGRAMMER → my recoomendation would be to search for a PROGRAMMER to engage as TEAM-PARTNER instead of trying to do it on your own.
In most cases you will just loose a lot of time trying to achieve a good coding result, without any knowledge in coding.
To give your CUSTOMER a good and quality-like result, i would reccommend to use a HTML-MAP-Version of Google-Maps, like shown here in the following example…
… and connect it with your Wix-Page and all including FEATURES and FUNCTIONS you want to be generated.