So we don’t take this thread off topic. Have a look here:
Most of the DJI drones have remote ID built in already. All remote ID does is broadcast the drones location and the pilots location along with other flight data. So you don’t need to “get a remote ID from anywhere” unless you are self building or have a drone that doesn’t have remote ID built in then you need to buy a module to wire into your build that will broadcast the same information mentioned above.