I usually wait a day or 2 to make sure there are no showstopper bugs. I am one of the dummies who installs these betas on my daily driver. I paid for that last year during the iOS 12 betas when the GPS was wonky. All nav (Apple Maps, Google Maps, Waze) were affected. That was a problem during some travels.
One thing I will do is make an archived backup of my phone before I install anything. I don't do that for betas later in the year, but I do do it for the X.0 early betas.
One thing I will do is make an archived backup of my phone before I install anything. I don't do that for betas later in the year, but I do do it for the X.0 early betas.