what are it's official language spoken there?
Spanish and English.
Puerto Rico
The official languages of the executive branch of government of Puerto Rico are Spanish and English, with Spanish being the primary language. 
what is the money called in puerto rico Puerto Rican dollars and peso.
wiki:25673058
Puerto Rico [SEP] Languages
The official languages of the executive branch of government of Puerto Rico are Spanish and English, with Spanish being the primary language. Spanish is, and has been, the only official language of the entire Commonwealth judiciary system, despite a 1902 English-only language law. However, all official business of the U.S. District Court for the District of Puerto Rico is conducted in English. English is the primary language of less than 10% of the population. Spanish is the dominant language of business, education and daily life on the island, spoken by nearly 95% of the population. The U.S. Census Bureau's 2016 update provides the following facts: 94.3% of adults speak only Spanish at home, which compares to 5.5% who speak English, 0.2% who speak French, and 0.1% who speak another language at home.