Here is what I got from the Department of Tourism when I asked about the Binax Now proctored through eMed test...

Negative results from at-home COVID-19 tests may be submitted to the USVI Travel Screening Portal (www.usvitravelportal.com) if accompanied by a verifiable lab analysis and/or report from a CLIA-certified facility. A photograph of the test result is not acceptable for entry.

When you do your proctored test you get an email with the results in PDF form.