Creating a student exchange

Interested in creating a student exchange platform similar to https://avtor24.ru/, it should be roughly something similar, but for the Ukrainian market

For the initial launch, it can be more simplified, but it must include the most essential features for functionality (client registration, freelancer registration, user-friendly chat, etc.), meaning a minimal launch with a small budget and gradual development afterwards

Interested in the approximate cost for such a project and the timeline, as well as consultation on how to best implement all this

I am attaching several screenshots from that website, but it would be better if you visit it yourself for a more detailed study