From Longman Dictionary of Contemporary English(whether you) like it or not(whether you) like it or notTRUEHAPPENused to emphasize that something unpleasant is true or will happen and cannot be changed Like it or not, people are often judged by their appearance. → like
Examples from the Corpus
(whether you) like it or not• You're going to the dentist, whether you like it or not. 