Power BI Dax Support & help ( questions and answers )

i am looking for some experts to answer essay questions and to help me build some DAX and formulas to make my report active i need this to be done direct with connection to my reports what i need exactly that I have tables with relation and I need to make some summary and total and i need to make a query from exiting table and i need to add one database table and i need to make one sales table

Note: i need this to be done direct no waiting