How to create a "string base" and use it in Unity?

Question

C++ / C#

Greetings!
Dear experts, please share your knowledge, I need to create a "string base" in order to extract from it, let's say, a line.
I imagine it like this:
"File with the base"
№1 What is your name?
#2 What's your favorite color
------------------------------------------------- --

Usage:
private void ReadString( string number)
GameObject.Text = Database.read string( From: #number, "Before" number+1)

Thanks in advance!