Hey Apeksha, to get the Read CSV activity, you first need to install the Excel Package i.e. UiPath.Excel.Activities package from Package Manager. Once you install this package, you can automatically see the Read CSV acitivty in activities pane. Checkout this screenshot to understand better:
![image](https://aws1.discourse-cdn.com/uipath/original/2X/5/5eb989d3e7844075c0e08fb99981f2aafd5a06c1.png)