The best answer is:A few female specimen coming out from plants,grown from seeds,will be parthenocarpic and produce fruits without pollination.
The rest,most of them,like 99 percent,needs pollination ,or ,are males ,and so they will not produce fruits.
I have both cultivars described above,for about 10 years in ground now,and only the one with silver leaves produced small fruits,that will fall off ,half grown.
These are wonderfull decorative trees,but if you want fruits get a known cultivar of Ficus carica,and if you are in Germany get an early ripening cultivar if you want ripe fruits,something like Ronde de Bordeaux,and you will be happy.