How many people speak more than 2 languages in the world?
There are 54 countries and and about 1.11 billion people in Africa. Many factors influence the reason there are so many languages. As in other parts of the world, different countries speak different languages. Many people came to Africa to colonise it, bringing new languages. There are many tribes in Africa, many having their own languages or dialects of languages. For these and many other reasons, many languages have developed in Africa.
It will differ depending on how fluently the person can speak each of those languages. Which then leads to the question of "what is a language ?" Some countries which have an official language and many tribal languages will produce more polyglots than a country with a strictly defined official language.
Someone who speaks two languages is bilingual, and if they speak two or more languages, they can be called multilingual. Someone who understands many languages can also be said to be a polyglot. A person who can speak two or more languages is multilingual. A person who can speak three languages is trilingual. A person who can speak only one language is monolingual.
Europe has many countries, with many different languages like, French, German, Dutch, English, Swedish, Spanish, Italian, Greek, Irish, Portuguese, Norwegian, Romanian and many, many others. So depending on what part of Europe you are, in will depend on what types of languages you will hear and how people will speak.
Today, many jobs are looking for people who are able to speak two languages. When businesses and organizations hire people who are bilingual or can speak several languages, then more customers prefer to go to that said business because its employees are able to communicate with a wide range of people.