You have the option to import/export all your printer and resin profiles to a .LYP file.
Use the import/export button located above the printer list to open the import/export interface.

You can also import/export only your resin profile to a .LYR file using the import/export button located above the resin list.

Note: If a printer profile already exists when you import a profile, Lychee Slicer will create a new profile with the imported data.

Note: The printer list is located in the quick access configuration page in the bottom left corner of Lychee Slicer window.

Simply click on your active resin or printer name to open it. Or inside Lychee Slicer setting page  ( File > Preference > Printers and resins )