Using the class method syntax will allow the symbolic reference even with strict, but it's still a symbolic reference. Instead, I would use can, as follows:

    require Value;
    my $x = 'getValue';
    if (my $coderef = Value->can($x)) {
        $coderef->();
    }
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This has several benefits. It does not add "Value" to the argument list, it does not use a symbolic reference, and it checks that the subroutine actually exists before trying to run it.

PS: for the curious, can is documented in UNIVERSAL.