Hello, I’ll try to answer your questions.
Hi, I’m a Catholic convert of 5 years and up until recently believed that all the stories in the Bible were literal.
You are not alone. A lot of cradle Catholics in my day (I was born around the time of Vatican II) were raised to think of all the stories in the Bible as literal also, and then had to face this issue when we got to about high school age and some religion teacher started covering the “creation narratives”.
As an initial matter, please understand that it is permissible for you as a Catholic to continue to take the Bible literally, and there are other Catholics out there who do so. It is also permissible for Catholics to understand some parts of the Bible figuratively. What is important in either case is that you understand the basic theme/ message that each part of the Bible is trying to get across regarding man’s relationship to God.
I’m told that the story of creation is figurative.
This is one popular Catholic interpretation which, as stated above, you’re free to accept or reject.
Does this mean that Noah and Abraham were’t real people? If this is true,…
Noah and Abraham were real people. Jesus referred to them both when teaching. Jesus would not have relied on fictional people to make his points.
One is however permitted to believe that while a real Noah and a real Abraham did exist, their activities might not have been exactly as specified in Genesis. To give one example, perhaps Noah was not 500 years old when he became a father, but rather a younger, more normal age like 20 years old, and the 500 years had some symbolic or literary meaning.
where in the Bible do the stories become literal?
This is the type of question that Catholic Biblical scholars frequently debate, based on things like historical evidence. I think rather than us trying to answer it, you would do well to read some Catholic Bible commentaries - and remember that there are multiple Catholic Bible commentaries approved by the Church, but no one single commentary out of the group approved by the Church is held up by the Church as THE authoritative one. The commentary would give you a sense of how Catholics interpret the Bible and why the same story might be in the Bible three times but written in a slightly different way each time.