You can play Sploosh SMP by adding the server in the Minecraft launcher.
On Minecraft Bedrock Edition, open the Minecraft launcher or Minecraft app. Go to the “Servers” tab and press “Add Server.” Enter the Sploosh SMP IP Address 51.161.101.168in the “Server Address” and the Sploosh SMP port 19132 in the “Port.” Then press “Save” and start playing.