Currently, there is no way to do this directly from Google Maps. However, there are a few ways you can indirectly find the location of a mobile number.
One way is to use a reverse phone lookup service. These services take a phone number and return information about the owner of the number, including the location. Some of these services are free, while others charge a fee.
Another way is to use a reverse GeoIP lookup service. These services take an IP address and return information about the location of the IP address. Many times, mobile phone carriers will use the same IP address for all of their customers in a certain area. So, if you can find the IP address of a mobile number, you may be able to find the location.
Finally, you could try using a reverse DNS lookup service. These services take an IP address and return the domain name associated with that IP address. Often, mobile phone carriers will use a specific domain name for all of their customers in a certain area. So, if you can find the domain name associated with a mobile number, you may be able to find the location.
Of course, these methods are not foolproof and they will not work in all cases. But, they may be worth a try if you are trying to find the location of a mobile number.