I am working on a spatial justice map for Iran, where I need to collect specific data from Google Maps. The data includes:

The number (or density) of schools, hospitals, libraries, gyms, etc., for each city (or county).
A distance matrix between each of the 450 counties in Iran in kilometers.
Is it possible to achieve this using Google Maps API? If so, what is the best way to approach it?
Which specific API features (e.g., Places API, Distance Matrix API) should be used for these requirements, and how should I structure the requests?

Any guidance or sample code would be much appreciated. Thanks!