EDIT 13 October, 2020: This issue has now been resolved and the leaderboards should be visible again. If you are still experiencing this issue, please make sure you have updated to Version 32 and try establishing a fresh connection to the game by fully closing and restarting the app.
There is currently a known issue with the scoring and leaderboard not showing in the Raid Tournament for players on V32. We are currently investigating this here. Our apologies for any inconvenience caused by this issue. We will update here with more information.