File Path Help

I installed the Alexa Remote pallet and I have can get my echo devices to speak the line on the node. However, I am not able to find the file path to have the node save the amazon login info. Can anyone tell me a file path I can use to get this working? I have home assistant supervisor installed on a RPI. I added a txt file using the file editor, but I’m not sure what the path is to that file or if there are write permissions set by default.