I know I can monitor the usage of saved search by saved_search_name from _audit index.
However, I can't find equivalent way to search that for view.
You can take a look at the splunkweb access log:
index=_internal sourcetype=splunk_web_access uri_path=*/app/<your_app>/<your_view>
Replace <your_app> and <your_view> with the app and view you want to see.
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