Quanto sei brava in italiano? or Quanto sei bravo in italiano? in the singular and Quanto siete brave? or Quanto siete bravi? in the plural are Italian equivalents of the English phrase 'How good is your Italian?" Context makes clear whether a female (cases 1, 3), a male (examples 2, 4) or a mixed female and male (instance 4) audience suits. The respective pronunciations will be "KWAN-to sey BRA-va" or "KWAN-to sey BRA-vo" in the singular and "KWAN-to sey BRA-vey" or "KWAN-to sey BRA-vee" in the plural in Pisan Italian.
"Good" in English is buono in Italian.
"It is good!" in English is È buono! in Italian.
"Good night!" in English is Buonanotte! in Italian.
"Good! And you?" in English is Buono! E tu? in Italian.
"Good! How are you?" in English is Bene! Come stai? in Italian.
"Good food!" in English is Buon cibo! in Italian.
"Good health" in English is buona salute in Italian.
"Good head!" in English is Buona testa! in Italian.
"Good artist!" in English is Buona artista! in Italian.
"Good fortune" in English is buona fortuna in Italian.
"Good lover" in English is buon amante in Italian.
"Good vacation" in English is buona vacanza in Italian.