The score files for gnobots2 are created in gnobots2/Makefile.am:

install-data-local:
        -$(mkinstalldirs) $(DESTDIR)$(scoredir)
        -for cfn in $(config_DATA); do \
            cfn2=`echo $$cfn | sed -e 's/\.cfg//'`; \
            fname1=$(DESTDIR)$(scoredir)/gnobots2.$$cfn2.scores; \
            fname2=$(DESTDIR)$(scoredir)/gnobots2.$$cfn2-safe.scores; \
            fname3=$(DESTDIR)$(scoredir)/gnobots2.$$cfn2-super-safe.scores; \
            touch $$fname1; chmod 664 $$fname1; chown $(scores_user):$(scores_group) $$fname1; \
            touch $$fname2; chmod 664 $$fname2; chown $(scores_user):$(scores_group) $$fname2; \
            touch $$fname3; chmod 664 $$fname3; chown $(scores_user):$(scores_group) $$fname3; \
            done

However, the config_DATA variable is now defined in gnobots2/data/Makefile.am, so this doesn't do anything anymore.