Accessing contents of .bundle files

I need to access the contents of a .bundle file I have on my Mac, but how can I do this? When I try to open it normally, I'm told there's no default program to open the file with. I've tried opening it with Unity as well, but it's not listed as one of the applications compatible with the file. Are there any programs I can use to have access to these files? Or is there a way I can access it through the console? Though, I'm not very good at using Terminal since I don't know many of the commands, but I do have HomeBrew and GitHub installed, if that helps with anything? I'd appreciate the help, I've tried a bunch of things and I'm not sure if I'm just missing something obvious or if there's some way to open it that everyone is aware of except me, or what, haha. Thank you in advance!!