Hi, and thanks for reaching out, and I’m sorry for the wait.
Nothing is needed from you right now. Your add-on is simply waiting in the review queue and will be reviewed. If the reviewer needs anything, they’ll reach out through the Developer Hub.
We’ve been seeing a large influx of new submissions, which has stretched review times, so I’m not able to give an exact date. We wrote about what’s happening and what we’re doing about it here: Important update: Addressing the long manual review times (Important update: Addressing the long manual review times)
If your add-on uses bundled or minified code, including your source code helps the reviewer verify everything faster. This guide walks you through adding a build for AMO script: Help our source code review process, add a build for AMO script (Help our source code review process: add a build-for-amo script)