Had anyone experienced with an impatient boss who require you to complete the project in the month you just recently got hired?

Here's the story, I recently got hired by a company, joined on 1st April 2022, the boss expect me to complete the app for Android and iOS by the end of this month. (An e-commerce applications exactly like shopee.com) Without providing me the Backend ApI , that they mentioned. They just gave me a and expect me to know what's happening at the backend.

He require me to give him a specific date that I can launch the app to play store and Apple store. (From my experience, it take days, weeks or months). He need a milestone of what I need , did , and will do (which predictably that they will reject any new ideas proposed) .

I even considering to quit, but I need opinions. Am I just too sensitive or there's something wrong?