Hi @saidnik0071, welcome to our forum!
Google ended the support for the Android Market in May of 2017 and it does no longer work for devices running Android 2.1, 2.2 and 2.3. The Xperia X8 has also reached end of support, so no software updates are available for this device.
Sorry to be the bringer of the bad news. 
0online
1869142posts