No. Of course they don’t. There would need to be a constitutional amendment, and that would require both houses of government to agree and 7 of 10 provinces with 50% of the population to ratify. So the rest of Canada has the ultimate say.
https://laws-lois.justice.gc.ca/eng/acts/C-31.8/section-3.html?txthl=terms#:~:text=3 (1) It is recognized,would require negotiations involving at
3 (1) It is recognized that there is no right under the Constitution of Canada to effect the secession of a province from Canada unilaterally and that, therefore, an amendment to the Constitution of Canada would be required for any province to secede from Canada, which in turn would require negotiations involving at least the governments of all of the provinces and the Government of Canada.