What does nus’ processing mean

Hi, Im sure a lot of us still have nus processing and I have a few questions

Will applying to nusc affect the processing time?

I saw some reddit posts about people receiving their offers already, be it their top choices or not, while some have been waitlisted, and some only got the results of their first choice and are waiting for the results of those down the list Are they the majority? How many have gotten their results last week?

Are offers given out in batches, ie specific dates like 30/4, or almost everyday someone will receive their offers

Does it depend on when you submit the application?

Does processing mean I have a high chance of being offered? Any past experience?