Probably just not capping the display to 99,999,990.
Actually the cap is 999,999,990 now... Also Sanae really can get a ton of score; you get way more PiV way faster too.
One of the reasons Sanae is so strong in terms of scoring now is because her bomb fills up het bottles fast; Sanae has twice the length for fruit other shots got, fill up banana thrice with her; get 999,999,990 spellcard bonus rather fast. As well as much longer time to grazing. Another notable thing is how some parts in the game have been buffed up and got harder, very notable is that Nitori got an extra nonspell before her third spellcard rather than her third spellcard coming right after her second spellcard, thus allowing you to gain more items faster so you can get more score at it by fruitgrazing.
I am pretty sure Gore's hoping this game gets scored a ton in the full release, as far as I've seen now it is definitely very interesting, I'll give scoring some shots later.