As of Final Draft 13.2.2, your Streak of how many days you've written in a row will appear on the Welcome Screen, as well as your record streak.
This is tied to the writing stats tracking feature in Final Draft 13. To hide the streaks, you will need to turn off writing stat tracking. This will stop all writing stat tracking.
To turn off writing stat tracking on Mac, click Final Draft 13 in bold in the top left, click Settings, and ungeneral uncheck Track Writing Stats and click OK, then restart Final Draft 13. The Streak will no longer appear in your Welcome Window.
To turn off writing stat tracking on PC, go to Tools in the menu bar, click Options, and under the General tab, uncheck Track Writing Stats, click OK, and then close and reopen Final Draft 13.