Hi arielco99810, I checked your account and your email address is not yet confirmed. Can you please be sure to confirm your address by clicking the link in the confirmation email you received? You may need to check your spam/junk folder for that email.
If that doesn't work, please try logging in to your WordPress.com account first. Then, copy the link from the confirmation email and paste it in your browser. That will confirm your email address so you can start publishing posts on your blog.
Please let me know if you have any questions about that. :)