Hard to say. Did you install the XBox Insider Hub and the console companion? I have those in my MS Store installed area, along with the beta fork of Minecraft for Windows 10. You do have and RTX card, right? Your Sig only indicates an RX 5700XT.
I think I had to wait a little after the beta acceptance, might have been a short wait. I would say just check your MS Store update tab thingy and see if Minecraft for Windows 10 needs an update. Maybe you have to do it manually.
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