There is no limit to how many times you can be revived or rebooted in a Battle Royale match. As long as there is another teammate alive, there is still a chance they can successfully revive. It all depends on proximity to the DBNO body, storm, and enemy pressure. For rebooting, success depends on location of the reboot card and reboot vans in relation to the storm. Chances are you will only pull off 1 reboot in a match, so make it count!