Go to a user profile, click on activity, and then on suggestions.
That page shows all the suggested edits for that user. To know if a suggested edit was rejected, or accepted, click on the "suggested edit" link you see in that page for every suggested edit.
That is the list of the suggested edits, which in my case is at https://drupal.stackexchange.com/users/199/kiamlaluno?tab=activity&sort=suggestions. For a list of other edits, see the page at activity > revisions; that page includes all the edits that were not suggested edits, such as edits to own posts, edits to Community Wiki posts (which are possible for who has a reputation higher than 100), and edits done when the user has the privilege of editing every post (which excludes editing tag-wiki posts, possible only to who has a reputation lower than 20K).