Vivado Simulator copy multiple values
I see that the post is pretty old, but I stumbled upon the same issue and wanted to give some advice for the future. You can print all the values into the tcl command window by using executing the following command:
get_property value [get_objects /top/U0/signal]

if you want to influence the radix you can set the respective property
set_property radix dec [get_objects /top/U0/signal]

Allowed values are: default, dec, bin, oct, hex, unsigned, ascii, smag
More details in UG835 - Vivado Design Suite Tcl Command Reference Guide