Update showing (but can’t find it)

[Using Version 1.7.2 with WordPress 5.4]

In my WordPress Dashboard, beside Forums there is a (1) indicating there is an update/new post, etc. In the sub-menu, the Members area has the (1) beside it. However, if I go through all the members, I cannot tell what is ‘new’ and triggering this update.

How do I find the cause of this (1) and remove it?

Thanks!