You can find your Data Query Reports by clicking on the drop-down menu at the top left of the interface:
Here you will find a list of your registered Reports as well as several options:
1 - Click the Reports to open it in Data Query
2 - The pencil allows you to change the information about the Reports such as its name or description
3 - The trash can allows you to delete the Reports, a confirmation window opens before the final deletion
4 - By hovering over the symbol ⓘ, you can visualize the description of the Reports if it has one