There are those who do speak in tongues and those who interpret it. I am not one of either, nor have I ever met or known anyone that does. But when I was first looking to join a church back in the day, I had called one and the lady asked if I did speak in tongues and I said no, she then said I was not saved if I didn't but then wanted to pray for me 'to be enlightened'. Needless to say, that was not a church for me.
1 Corinthians 12:7-11
7 Now to each one the manifestation of the Spirit is given for the common good. 8 To one there is given through the Spirit a message of wisdom, to another a message of knowledge by means of the same Spirit, 9 to another faith by the same Spirit, to another gifts of healing by that one Spirit, 10 to another miraculous powers, to another prophecy, to another distinguishing between spirits, to another speaking in different kinds of tongues, and to still another the interpretation of tongues. 11 All these are the work of one and the same Spirit, and he distributes them to each one, just as he determines.