Cannot install Apache - getting errors

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Hi, I unable to install Apache on Ubuntu 20.04lts

Desktop Computer is running Kubuntu 22.04lts

I have installed Oracle' VirtualBox on that.

On VirtualBox I have installed the basic Ubuntu 20.04 server.

I can ping Google.

I issues the command "sudo apt install apache2" and got a list of errors 
all similar to this one:
- - -
Err:1 http://us.archive.ubuntu.com/ubuntu focal/main amd64 libapr1 amd64 
1.6.5-1ubuntu1
   503  Service Unavailable [IP: 91.189.91.38 80]
- - -

When I search Google I get a few different answers....

One is to issue the command "ls /etc/apt/apt.conf.d/*proxy*" which 
returns :  ls: cannot access '/etc/apt/apt.conf.d/*proxy*': No such file 
or directory

I am not using a proxy....

When I issue the command : "sudo apt update" it returns : Err:1 
http://us.archive.ubuntu.com/ubuntu focal In Release
   503  Service Unavailable [IP: 91.189.91.38 80]


I assume this has something to do with VirtualBox?

I can SSH into the box from the command line on my desktop.

How do I troubleshoot this?

Any help is much appreciated.

Thanks!!
Keith