对不错？It is incorrect. This expression is not a question, and it is not to be pronounced together. Should be 对, 不错 Pronounce: 对 pause a second then 不错.

you can say "還不錯"or "還不賴"

in Chinese， “pretty much ok” u can say “非常好” . and if u want to say he has done well, u can say "很棒" "不错“.

in chinese,pretty much ok,for my understanding,its 非常对，非常正确。like this. if my understanding of "pretty much ok"is correct.