Assuming that all of your iPads are signed-in to iCloud with the same AppleID - and that Find My iPad and location services are enabled on each device - the location of each will be visible within the Devices tab of the Find My App.
You should note that you (a person) will only share your location from a single device (often an iPhone that is carried with you). As such, you can share your location from the device that you choose (i.e., just one iPad/device).
You also perhaps need to consider that only WiFi+Cellular models of iPad have GNSS/GPS capabilities - this being a function of the iPad Cellular chipset. WiFi Only models of iPad have no GPS capabilities with which iPad Location Services can derive location. This fundamental difference may significantly impact your ability to use mapping Apps - in particular if real-time or accurate positioning is required.
WiFi Only iPad models can only “infer” their location from a database lookup of neighbouring WiFi networks for which the geographic location is known, or the geographic location of your public IP address. For static applications in urban locations, where the location of IP public IP addresses and WiFi networks are known, an “inferred” location can be relatively accurate. However, in rural locations, or when using a Cellular/Satellite/VPN connection, location accuracy of an inferred location [if it works at all] may be very inaccurate.