You don’t really need to see it. Unless you were one of the people like me that had multiple instances it just works. I’m pretty sure it just grabbed the first Pushover instance it saw in my yaml. See here about multiple instances. Pushover GUI configuration allows only one instance · Issue #77852 · home-assistant/core · GitHub
If instead you mean devices as endpoints that can be set like below.
message: This is the message for Moto G stylus
message: This is the message for motoe5 and motogstylus
target: [motoe5, motogstylus]
Check Pushover: API For other attributes. When you log in you can also see the names of devices. I also upload sounds that can be specified. medicine is an audio file I uploaded to Pushover.
message: Did you take your medicine?