Not able to connect through RDP to a azure VM after trying to set static IP on BOX

Please see https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/detailed-troubleshoot-rdp and report more information in your question on steps you have tried.

Also you may want to check out https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/troubleshoot-rdp-connection