Building a School Website and Students BlackBoard

I have a potential client what wants a school website and blackboard built for them. The hosting will be on Godaddy Virtual Private Server (VPS).

I need quotes in terms of cost and time to complete the work.
And example of the Blackboard is below:
https://blackboard.uwindsor.ca/
https://www.youtube.com/watch?v=D1HXiq1JVOM&ab_channel=CentreforTeachingandLearning