Expert on App Native and web opencart needed for a project

The Tasks for this project is provided in the document.
Our website https://ibeauty.sa
it is Opencart platform operating system
App is Native
We need experts on Servers, Web Developer, App Developer
Please read tasks carefully!

Please include your answers for the following question when replying
How much would it cost me?
When can you finish the project?
in How many work hours can you finish the project?