suppose I extrude sketch for some value then pattern it now I have to edit the value how to do without deleting the pattern
I can help you
Answered with a tutorial: https://grabcad.com/tutorials/how-to-edit-extrude-without-deleting-pattern
just edit the first sketch you have created.....
Just right click on extrude feature in pattern and select "edit". Dimensions will show up. Click on height of extrude, enter new value and click regenerate.
Or right click on extrude feature and select edit definition.