I use Clear Linux and try to get Dropbox working with a GUI menu for settings and configuration. In Windows we have a little Dropbox icon to do that, but icons are not supported in the recent GNOME versions. In case of Clear Linux we have GNOME 3.34 now.
I tried to install Dropox with flatpak, reboot and when I click on the Dropbox icon, only the deamon starts and downloads my files. But no GUI anywhere to configure Dropbox.
Than I removed the flatpak and followed the steps for Nautilus integration here: