I’m no understanding, you want to store the pourcentage of right and wrong questions ?
-Make a table with your questions
-Load before the start of the game 100 questions
-Send the question to the user and collect response
-Create a table with player | PourcentResult
-Calculate the score of your player and insert it in the DB
go on either.io, an app exaclty like that, where it shows u the % of how many answered this or that…
some guy said “create a database” and i want to know how
Creating a database is a programming concept not only a unity concept, for simplicity and accessibility i use
-https://azure.microsoft.com/fr-fr/ whis a sql server DB
Then i use my database with a secured web service called by my game with Unity - Scripting API: WWWForm
You can too create your database locally with UWamp (free), he can create a MySql DB.
For creating the structure of the database you should look at some SQL tutorials
You should create a web service for accessing the database, call a database in your game is very unsecure because people can decompile it and found the password or the connection string. Do not forget, with uWamp the database is only locally, (someone outside your local network can’t read it) maybe you can find a free database host online, but i’m not aware of it.