Can I publish my Master's thesis while my supervisor is marking it My supervisor has not finished marking my master's thesis. 
Am I allowed to publish it in a journal before he finishes marking it? I asked him the question  twice, but he never replied to me.
I suppose your advisor will be coauthor in whatever paper you write that is based on your thesis. In such case, you need their approval of the manuscript before submitting it for publication. 

If you are considering submitting for publication and you are not considering putting your advisor as a coauthor, I would strongly encourage against it if the norm in your field is to include your advisor. If your advisor has already signaled that they do not feel comfortable being an author, you should strongly reevaluate whether your work is worthy of publication before submitting it for publication.