I just checked on the latest NextCloud. Nope, no support for recurring tasks at all.
The Calendar, however, has support for repeating an event daily, weekly, multiple times a week, on a day of the month, or annually. And the notes field is about the equal of the Tasks description field.
It doesn't let you mark it as completed, though, or assign it to someone else.
Next I'll look in whatever they have for project management.