No watermarks are added to your videos in the free version. How to Get It (Before Discontinuation)
You need a free Adobe account to activate the software and for license validation every 30 days. Alternatives Adobe recommends transitioning to their new apps: Premiere on iPhone : A free, updated video editor. Adobe Premiere Rush Free Download
For more advanced editing, you can start a seven-day free trial of the full Creative Cloud suite. If you'd like to know more, I can: No watermarks are added to your videos in the free version