Varun, I may need additional information before I can be sure to answer you questions.
What do you mean specifically when you say quantities? Are you asking about entering materials like widgets or actual hours/costs? A Materials resource can be used to enter planned and actual materials used, and there is a Cost resource for entering straight costs.
Planned vs actual what? The Gantt chart shows the % duration complete by default. It’s not exactly the easiest to use but the Bar Styles dialog box can be used to modify how the Gantt chart is displayed. There are several blogs and videos that can help explain how to use it if you need.