when in LFS I click on Start on "new host" In the Master Server does not appear why?

because LFS does not do UPnP (which is a standard since 10 years) and people have zero knowledge about opening network ports on routers nowadays. search on forum, there are dozens of topics about this already

but or already done everything I can not open it could you help me?

nah not really.. without teamviewer and router admin password it takes too much time.