No. This comes up several times a year. There is no way to have an invite link that can be used by more than one user.
The use case is that you want a community to be mostly private, but having a URL that you can show on a slide at a conference and let people join is an acceptable level of privacy for the community. The easiest option is to allow anyone to sign up with “approve all users”, include a custom field with a secret word (e.g,. “myconference 2020”) and then just manually approve everyone who includes the secret word.
After considering this problem for 4 years, it has just occurred to me that a plugin that would auto-approve people who used the secret word may be the best solution to this problem.