Looks like 10 is my ballpark solve on this one

squareword.org 612: 10 guesses

🟩🟩🟨🟨🟩
🟩🟩🟨🟨🟩
🟨🟩🟩🟩🟩
🟨🟨🟨🟨🟩
🟨🟨🟩🟩🟩

<6:🟩 <11:🟨 <16:🟧 16+:🟥
#squareword #squareword612