Bi2(Sr1.4)Pb0.6Ca2−xYxCu3O10+y superconducting thick films were prepared and deposited on MgO (100) substrates using a Melt-Quench-Annealing method (MQA).The superconducting transition was found around 89 K. Electrical conductance fluctuations and the thermodynamic fluctuations, close to Tc, were analyzed from results of R vs T measurements on the samples. Ytrium concentration range was in the range 0 ≤ x ≤ 0.8. Additionally, considering the Aslamazov-Larkin law, with Tc value fixed according to d 2R/dT2 criterion, the conductance trend in the samples was revealed. So, when x ≤ 0.075 a 3D behavior was found, on the other hand when the concentration increases to x = 0.8 a 2D behavior is stabilized. From these characteristics a correlation to the structural properties of the sample can be inferred.