in my situation i have a map devided into multiple parts each part could have about 20to100 arduinos that they should send informations from time to time to the master. first problem how could i do this?

Second problem how could i use the other arduinos to send the infos from arduino that are so far from the Master Example in part 1 : Arduino X is 500 meters far away from the master ! so how could use the other to send the information

can i do this with NodeMcu or such equipment with built-in wifi ?

thanks in advance.