Opening "https://play.google.com/store/apps/details?id=com.google.ar.core&hl=en" it will say "Incompatible with this version".
Compared to the list provided by google, it seems the BV9800 should well be able to do this.
Also looking up news:
https://telecom.economictimes.indiatimes.com/news/mediatek-helio-p90-to-come-with-arcore-google-lens-support/67092506
"Now that Helio P90 is ARCore and Google Lens ready, we’ll be working closely with OEMs to provide them with comprehensive support so they can quickly design and bring devices to market that are optimized for AR applications and Lens,” added Lee. MediaTek is enabling this technology across its portfolio and Helio P series with Helio P60, and Helio P70, already certified for ARCore and Google Lens.
https://developers.google.com/ar/discover/supported-devices
Manufacturer,Model Name,Model Code,RAM (TotalMem),Form Factor,System on Chip,Screen Sizes,Screen Densities,ABIs,Android SDK Versions,OpenGL ES Versions
Google,Pixel 4,flame,5466MB,Phone,Qualcomm SDM855,1080x2280,440,arm64-v8a;armeabi-v7a;armeabi,29,3.2
Google,Pixel 4 XL,coral,5466MB,Phone,Qualcomm SDM855,1440x3040,560,arm64-v8a;armeabi-v7a;armeabi,29,3.2
Google,Pixel 3,blueline,3546-3580MB,Phone,Qualcomm SDM845,1080x2160,440,arm64-v8a;armeabi-v7a;armeabi,28;29,3.2
Google,Pixel 3 XL,crosshatch,3546-3580MB,Phone,Qualcomm SDM845,1440x2960,560,arm64-v8a;armeabi-v7a;armeabi,28;29,3.2
Google,Pixel 3a,sargo,3593MB,Phone,Qualcomm SDM670,1080x2220,440,arm64-v8a;armeabi-v7a;armeabi,28;29,3.2
Google,Pixel 3a XL,bonito,…
…
Looking at the specs and the mediatek news; it would be very nice to see something along the lines of...
Blackview, BV9800, BV9800, 6000, Phone, MediaTek Helio P70 MT6771V/CT, 1080x2340, 409, arm64-v8a