Pretty self-explanatory. All the stats are on how many Rems in queue, reviewed etc. I use Remnote for a lot of note-taking and writing, and it’d be motivating to see how many words I’ve written.
There is already a plugin for that. IIRC it is on the plugin page: https://www.remnote.io/plugins.
If not, have a look at the plugin section of Awesome-remnote: List of plugins, themes and other resources