How we can publish multiple applications on same VIP with same port & same irule?

Try this:

when HTTP_REQUEST {
    switch [string tolower [HTTP::host]] {
        "abc.com" {
            if { [string tolower [HTTP::uri]] contains "cvapweb" } {
                pool abc_9090
            } else {
                pool abc_8080
            }
        }
        "xyz.com" {
            if { [string tolower [HTTP::uri]] contains "cvapweb" } {
                pool xyz_9090
            } else {
                pool xyz_8080
            }
        }
    }
}

Not sure why you're using SSL::disable in your original iRule. Using it in an HTTP_REQUEST (OSI layer 7) suggests that you want to disable server side SSL, but if none of the downstream pools are SSL, and you don't have an SSL profile applied to the VIP, then you don't need this command.