How to send data from a Sql Server to another Sql Server (Not Linked) Using C# ASP.NET HttpClient

I need to send data from one Database (Server A) to another Database (Server B), on both server I have an ASP.NET application. I've searched about using a XML file with HttpClient Post. I don't want to use Web Service because i can't modify the Server B's application (I'll use an aspx file that already receive a xml from a Android App).

Any advice? If you can share some links about how can i do it i'll appreciate it :)

Thank you for your time, peace.