@ricabarros,

Please find the information below: 

Votes are stored in the:

• wp_commentmeta table with the wpdiscuz_votes key
• wp_wc_users_voted table

Rating:

Post Rating Based on Comment Rating Field is stored in the wp_commentmeta table with the meta key mentioned in the "meta key" section of the field. 

The Stand-alone Post Rating is stored in the wp_commentmeta table with the following keys: 

• wpdiscuz_post_rating
• wpdiscuz_post_rating_count

The boldly marked wp_ is just a prefix in your case it can differ.