If you have amblyopia, what scores do you get on the vision chart tests?

Varies widely. The depth of amblyopia generally depends upon the level of blur present during childhood. We generally see visions ranging from 20/30 to as poor as 20/400. Generally acuity improves with single letters which decreases visual confusion.
Varies. Some people can have vision as good as 20/40 while others can only see the big e.