what is the Bullet point char value in COS

W $ASCII("•")

8226 

W $CHAR(8226)

•

As Jeffrey already wrote, this is charCode x2022 (hex) but take a look at

https://www.unicode.org/Public/12.0.0/charts/CodeCharts.pdf

There you will find many punctuation and mathematical characters and geometric shapes. For web developers, this is like the land of plenty. My favorit characters are x2700 - x27ff (hex, of course) ✔ ✘ ✆ etc.