[bug]: regarding env file and data representation on page

can you please tell me what parameters to add in the .env file and what to add in those parameters.
And also please help me on how to show data on the page because I have uploaded all the data on my mongoDB compass and database is also succesfully connected but I am not getting to show data on the page.
Right now I only want to run in my local machine so please tell me according to that.