do I have to delete my entire save to submit a speedrun submission? Or can I simply just play through them all?

Hello, if you plan on running Speedrun Mode NG+ you can just play through all the challenges on your main save with all challenges already unlocked. Make sure to turn off online features otherwise load times will be a little bit longer.

For Speedrun Mode NG , you can create a new profile on your Switch and start the game from this profile to have a fresh file. You can only have 8 profiles on your Switch so if you need to delete one profile you can go to Switch Settings > Data Management > Delete Save Data > NWC > Select profile to delete (don't delete your main profile!)

Also make sure to read the game/category rules for any category :)

oook thank you so much <3 i will say we need a pannel for each challenge also like punchout for each fighter i have some challenges im tied with the world record for those challenges.

I did see there is a category for each game but not every challenge so thats really cool thank you for all the help :D

Actually, we do have a leaderboard for every individual challenge. You should be able to find them under Levels or in the main leaderboards in the drop-down menu that usually says Full Game.

https://www.speedrun.com/nwcnes/levels :)