不错 (búcuò) Pretty Good/Not Bad (Beginner)
The character “不 (bú)” means not and “错 (cuò)” means bad.
Example:
Nǐ zhè cì wénzhāng xiě de búcuò, jiāyóu!
你这次文章写得不错，加油！
The article you’re writing this time is pretty good. Let’s continue to make greater effort!