Multiplayer Minecraft on Android

To host a multiplayer world on Minecraft, do the following:

1. Setup port forwarding for the Xbox Live ports on your home router
   
2. Configure “allow” rules in your Windows 10 or 3rd party firewall for the Xbox Live ports
   
3. If using a 3rd party security solution, ensure Teredo is enabled (use the Xbox Networking utility for troubleshooting)
   
4. Ensure all participants have enabled online gaming on their Xbox live accounts
   

Yes, that's correct.
Despite fire tablets runs a custom Android version, Minecraft couldn't be downloaded on regular Android devices due to Minecraft was purchased on the Amazon Appstore, which is exclusive of Fire tablets.

and because of "minecraft for android" being there i cant earn achievments for minecraft for windows

This is for normal worlds hosted on other devices on my local area network. I've tested hosting worlds on android tablets, android phones, ipads, and a dedicated bedrock server running on my PC. In all cases, the mobile devices are able to connect to other
multiplayer worlds on my LAN, but the XBox shows the "Your friends are not playing Minecraft right now" message despite being able to see the other worlds (as indicated by the count under the friends tab).

Hello, James.

The Minecraft license purchase is per platform.

Example: if you purchase Minecraft on Android, your son can play on any Android device. So, if he wants to play on Xbox, a new purchase is required.