Vector Tile Example
https://laquinta.maps.arcgis.com/apps/webappviewer/index.html?id=a24986e6471e4266ab7e9e36eaeb7812
More sample at https://opendata.laquintaca.gov/
How to publish vector tile on Arcgis online
Step by step
ArcgisPro > share as web layer (choose vector tile) > create "Web Map" > create "Web app builder" app
Create Web map
Create Web App Builder