Yes! Beta 3 works! Downloaded, installed, and already converting files right now! (I was searching for that link but the ones I found were wrong). Thank you!! PD: Reality Capture Beta 3 is the last version that works with Catalina 10.15.7. (Tried installing Beta 4 just in case and it won't work).

Using the logic of the URL for Beta 3, by changing the number you can download newer betas: https://developer.apple.com/augmented-reality/tools/files/Reality_Converter_beta_4.dmg https://developer.apple.com/augmented-reality/tools/files/Reality_Converter_beta_5.dmg Try one of those.