You cannot take that same exam again because you passed it - the PDF is correct.
There are alternative ways of you achieving VCP-NV 2020 - I believe paths 1.1.3 and 1.1.6 of this page apply to your situation, so you could either pass the 2V0-41.19 exam on NSX-T 2.4 or complete an NSX or NSX-T class.
However, you may not need to achieve VCP-NV 2020 as part of becoming a VCAP. You don't say which of the VCAPs you intend on doing, but you can review the current requirements and path options for Deploy 2020 and Design 2020. (these may change as newer exams are released through the year)
You can review your current status with Certification Manager. (the above links will also take you to that site)