By using the HTTP Client toolkit in LabVIEW, you can utilize the WATS Rest API to query the WATS Server. For documentation, see the WATS Rest API section.
For Authentication use a security token. IMPORTANT: Type "Basic" befor the Token ("Basic tokenID").
See this article on how to create a token: https://virinco.zendesk.com/hc/en-us/articles/360011578739-Tokens
The same example also applies for WATS On Prem where https://nn.skywats.com is replaced with your local WATS Server address.