Sorry for late response, use following guide, just make sure you select the right update for your phone https://xdaforums.com/t/beta1-samsung-galaxy-s23-oneui-7-beta-zips.4617029/
Since there is mixed information about the beta rollout, I decided to sideload it. It's very stable, and the animations are on another level. I'm loving the experience! I have S23 Ultra
