Hello and welcome, If you're like me and still waiting for the release of Rage of Demons: Out of the Abyss for D&D 5e than please make some noise and let the Dev team know that we do indeed really want it! There was some talk on other threads that I would possibly be released at the end of 2019. Only 30 days left in the year and it would be great to hear some update!
If you don't want to wait, you can buy the battle map pack from Jared Blando's site , which are easy enough to setup on roll20. You can find the two larger maps for purchase at Mike Schley's site.