Want to transfer a Minecraft profile to another Microsoft account

As stated in another answer, you cannot transfer profile stats, however there are two accounts used in Minecraft on Windows 10. #1 is the Windows Store MS account you have signed in on your PC to purchase Minecraft. #2 is the Xbox/Windows Live account you used to sign in once Minecraft is launched. In your case, you used the same account for both purposes. On a different PC, you can download Minecraft with your Windows Store MS account, but create another Microsoft account for your kid. I suggest creating a proper child account that you can manage to protect them online. Check this link for instructions: https://support.microsoft.com/en-us/account-billing/what-is-a-microsoft-family-group-b6280c9d-38d7-82ff-0e4f-a6cb7e659344

The application license is tied to the MS account used on the Windows Store. It doesn't appear to be applied to the PC itself, so in my case, me and 2 kids play using the same application license, but different online accounts. I'm not sure if that is intended to work that way or not.