This is the Brush Pop Digital Watch Face, created by TIMEFLIK.
Brush Pop by TIMEFLIK — description
*This TIMEFLIK digital watch face is available on Wear OS devices.
[Key Features] - Digital Time - 12/24 Hour Format - Date - Battery - 7 Colors - Always on Display
[How to Customize] - Press and hold the watch face for 2-3 seconds to enter the customization screen. - Swipe right to browse and select available styles. - Check the screenshot images for more details.