Spoke lengths and nipple types for Reynolds wheels can be found in the technical service manual for your wheel, which is located in the Technical Service Manuals section of the Reynolds Docs page. Within the manual find the page for your wheel model, then find the heading for your specific configuration (front, rear Shimano, rear Campagnolo, etc.), and then look through the item descriptions to find the spoke length and the nipple type.
You can also take your Reynolds / SUNringlé wheels to your local bike shop where the mechanic can measure and replace the damaged spoke with a generic j-bend or straight pull spoke that they carry in inventory.
Bearing size information for SUNRinglé hubs can be found in service guides and exploded views in the Hub Information and Service Info section for current hubs or the Legacy Hub Information section for legacy hubs on the SUNringlé Docs page.