Please suggest me the method to extract data from the UI of tableau as UiExplorer is not giving me the options for selector and have also used get attribute and get text activity

Please suggest me activity to extract data from UI so that validation of data can be done

Expand Target. Click the UiExplorer icon next to Strict Selector. Now you will see options for the selector.

However, you should use the Table Extraction wizard if you want to get all those values.

Which package or activity provides Table Extraction Wizard?

Click on the button on the top ribbon: