In the future, please start your own thread so we can respond to you more quickly.
Themes can’t be uploaded to blogs hosted on WordPress.com. They can only be uploaded to self-hosted blogs running on WordPress.org software. You can read more about the differences between WordPress.com and WordPress.org here:
On WordPress.com, you can select from a variety of themes to change your blog’s appearance. You can read more about customizing the appearance and theme of your blog on WordPress.com here:
Please let me know if I can help with anything else!