Many converts to Christ had never even seen a Bible prior to their conversion. In many countries in the world, the Bible is banned and if you are found with one, you can end up in prison, and if you try to convert anyone to Christ, you can even get the death penalty. You can be sure there are hundreds of thousands of Christians today who cannot read the Bible. But the Holy Spirit causes their conversion to Christ and leads them into the truth of Christ.
Usually they get to see the Bible at some stage or other, especially in this digital age where governments cannot stop all sites where the Bible is in digital format. The Internet is now taking the place of the printed page where that has become a near impossibility. Yet that still leaves blind people, and those who cannot read, and those who belong to tiny tribes where the Bible has not been translated into their language. Bible Societies are working hard in those areas to meet the need.
The Bible is the written word of God and is incredibly important for learning the gospel and helping people come to faith in Christ and to live Christian lives, plus for the governing of groups of Christians locally. The point is that if you claim to be a Christian but have virtually no interest in reading the Bible for yourself, you should be ashamed of yourself. And you probably have no idea what it means to be a Christian, and to live for Christ, not self. It would be highly unlikely that you would be showing the fruit of the Holy Spirit, or that you could clearly be seen to be different to non-Christian people around you. But the Lord knows those who are His - 2 Timothy 2:19.