To create your Google Maps API keys:

Go to https://developers.google.com/maps/documentation/javascript

Then click on  on the upper right.

Select the 3 options:

Then select “Create a new project”:

Name your project and click on next.

Create a billing account if you don’t have one (this is mandatory):

 

The account is automatically restreint to the free trial 300$ limit:

Once you have filled the billing form, hit the “start my free trial button”, enable your api key:

 

Copy your API key and go to the API console to set the restrictions:

Go to the API restrictions tab:

Select the following APIs:

Save and you’re all set!

Now you just have to copy and paste your API key in your wp-admin in Settings > Woogelocation Setting -> Google Api Key Field