What technologies to use for Driving School?

Question

Frontend

Good day, tell me which technology stack to use.
So I note that it is also planned in the future to tie a mobile application to this system for
Driving School instructors, now they use the usual crm and an aggregator for storing data.
Requirements, they want all the data to be collected in one place, so that in real time you can see the results of the employee's work for the day, week, possibly kpi charts for different departments in real time.
Rating of instructors according to various criteria and a lot of things with a reserve for the future.
It was proposed to create your own api web application, where data from various departments would be entered and it could be tracked both for employee motivation and the competitive aspect.
What is the most rational way to implement these ideas? What combination of technologies can be used to implement this api application and is it necessary for these tasks?