I want to apply filter to multiple layers but i want the end user to enter only one value in one place. Then i want the output from filter widget to be the input for query widget. Is this possible in experience builder??
Yes, I think you can do that. This should walk you through setting up a Group Filter. As long as the Filter Widget is using the same Datasource and Datasource View as the Query Widget, the data going into the Query Widget should also be filtered.