If you understand English fluently, you can hear people from Brave discuss this in one of the more recent Community Calls they make weekly. I posted about it at Psa: updates from brave call
The YouTube video is https://youtu.be/gdgf4CayBQI?t=2529 I put a time stamp on it to be around when I started talking to them to ask questions. The first one directs what you asked. The summary, which I shared in the link to the PSA, is as follows:
We’ve moved fast in trying to get BAT to everyone and make ourselves available in as many regions as possible. Unfortunately each government has different restrictions and we’ve encountered some pushback from that in different countries. For example, each country has different requirements for KYC/AML among other things that weren’t being met by current standards, so those regions had to be put on hold while this gets resolved.
We really want India and other countries to be able to be Verified and are working behind the scenes to do everything we need. We hope to get this resolved ASAP but there’s no timeline.
This was about all regions, though focus on India as it had been the most recent region with an issue.