Pen & mouse?

For mouse, any Bluetooth mouse should work.

For the Apple Pencil, it depends on the exact model of iPad Pro you have. See here: link-> Identify your iPad model - Apple Support

Then see: link-> Apple Pencil compatibility - Apple Support

That model number corresponds to a 9.7", Silver, 128GB iPad Pro from 2016. It is compatible with the first generation Apple Pencil per the linked support document above.