I’d imagine you would receive a strike if a DMCA takedown is sent. While it is technically possible that you could end up “getting away with it” if it goes unnoticed as is the case with some songs on the site, it’s better to be on the safe side and not risk any legal issues.
As outlined in our terms of use, we have implemented a three-strike policy that is designed to punish repeat offenders who knowingly and repeatedly upload infringing content; this policy is also designed to prevent well-intentioned developers from receiving future strikes and moderation actions by providing them with educational and content removal resources.
Source: https://devforum.roblox.com/t/more-information-about-our-dmca-policy/255884