There is unfortunately no universally recognized standard format, and I have no control or oversight over how other password managers can import password information. As such, I can't provide a convenient mechanism to move your passwords into another manager.
With that said, Spectre does provide its own password export file, which will hold every bit of information the app contains. This export file is in an open format, so that it is legible both to yourself as well as to anyone looking to programmatically parse it for import purposes. Since Spectre is fully open-source, we have also publicly documented our export format: https://gitlab.com/spectre.app/api/-/wikis/File-Format
Let me know if I can do anything else to help.