First, according to Dr. George Zahorian, the man responsible for selling the steroids to McMahon, Piper, and Hogan claimed to have been sending three dozen packages of steroids. The case mostly revolved around the illegal distribution and the way he obtained them (since Zahorian apparently didn't need more than an advance in his paycheck to sell any number of banned/illegal/regulated substances).
Second, if Vince McMahon had been found guilty, which was very unlikely since very few people can attest to the use and reputation of steroids in the locker room. Not to mention the autistic Nailz clearly stated that he "hated' McMahon and completely derailed the whole trial, but I digress. Anyway, IF he had been found guilty, he was to serve any where from 8 to 11 years in prison, face a fine of $2 Million and the seizure of Titan Towers.
Thirdly, if this had all happened, no way Patterson was going to be taking the head role, or any role, and would've been fired (though he eventually was) due to the multiple sexual harassment lawsuits that hung over McMahon and they threatened to come onto the WWF. Jerry Jarrett was hardly even employed, mostly the guy who ran their developmental. Linda McMahon was named CEO in the early 90's, just before the trial, iirc. But the product would be very much the same, and the whole atmosphere of the show would be similar as well.
Fourthly, WWE would've been derailed to shit. Losing their headquarters, a two million dollars, the massive publicity nightmare, the gay guy who tried getting everyone in bed. The thing would've unraveled. It would've given WWE a stigma, that may've pushed many major signings from ever coming to the show, and would've made it easier for WCW and other promotions to sign off their wrestlers. Most of the "celebrity" wrestlers would've stayed away. I doubt WWE would've been in the right financial state to be launch an Attitude Era. By this time, it would probably have recovered, but not be nearly as stable and healthy as it is.