Helicene molecules show promising properties for future applications in optoelectronics due to their impressive optical properties and long effective conjugation. In this work, we thus study the properties of [7]-Helicenes in junctions with gold nanoparticles with emphasis on charge transport. The two helicenes are positioned between gold nanoparticles of different sizes creating to emulate molecular junctions and we utilize a combined quantum mechanical/molecular mechanical methodology using the polarizable embedding scheme to compute Coulomb blockade diamonds for the helicenes. Both molecules create Coulomb blockade diamonds following the 1-3-2 pattern.