sorry, i forgot to answer. There is no any simple way, it's required customization which is not part of support. You can customize file taxonomy-dealstore.php by yourself or hire customization team webbizdirect@gmail.com

Please reply for the third query as well

1. There is no such option
2. You can enable post layouts for deals
http://rehubdocs.wpsoul.com/docs/rehub-theme/post-settings-and-page-templates/post-layout/
for example compact post layout which shows thumbs. Also coupon popup shows
thumbs count

I have 3 Queries as follows:

1)How Can I Switch on Coupon Success rate to show to Users

2)How Do I know how many users responded with Thumbs up (Coupon Worked) & Thumbs down (Coupon didn't work)

3) How Do I show Coupons first instead of Offers & Deals on my dealstore page? How to Filter that?

Please tell me corresponding file names to edit (If core custumization is required)