Dear,
Before hiring me, please, explain if You need the lessons on English language, and the total number of the lessons. Do You need me on the video, explaining/ showing and explaining?
As I am not familiar with MCQ, please explain me in details what this represents (here we have different type of grades).
There is no attachments to Your posting, so there is no possibility to see the example You are writing about.
As for questions: per script I would need 3-5 days, depending on complexity of the theme, then 1 day shooting the video. Per script I would charge 500,00 USD.