Can You Boost FB Live?

Some of my friends used to live stream old videos that they had recorded, you can learn the tools to do that. The videos will loop and customers will interact with the videos as if they were live streaming.

Maybe you explain your question more clear, i don't quite get it right now. I'll answer as i understand first:
You can't directly boost a live stream itself, but you can boost the scheduled live post or a regular post announcing the live