Wildcard in variable, Shell bash, how to do ? Variable=$variable2*

May I suggest an alternate approach? Instead of making a space-separated list of filenames (which will cause horrible confusion if any of the filenames contain spaces, e.g. "test 123"), use an array:

diretorio=("${Var2}"*)
doSomethingWithAllFiles "${diretorio[@]}"
for umDiretorio in "${diretorio[@]}"; do
    doSomethingWithASingleFile "$umDiretorio"
done