Is there any quick way to obtain the customer's coordinate based on the address?

Thank you for your question. To resolve this problem, you can follow the below instructions:
1. Create a Google Sheet

2. Use Geocode Tools provided by Awesome Table
Don't worry, this is a free tool. Follows their tutorial and get the Coordinate automatically
https://support.awesome-table.com/hc/en-us/articles/360000111369--Part-1-Install-the-Geocode-add-on
https://support.awesome-table.com/hc/en-us/articles/360000112449--Part-2-Geocode-addresses

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Example of results generated by Geocode Tool

3. Copy Coordinates to the appropriate places
Now, for each customer, you already have a coordinate equivalent to its address. You can copy this information to the appropriate place. For example, you can paste it on our import file, refer to our Import Customer Tutorial:

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Address, Lattitude, Longitude in Import Customer file