Production cross section (left panel) and lepton charge asymmetry (right panel) of the W$^\pm \rightarrow \mu^\pm \nu_\mu$ processes for the 0--90\% centrality class, for muons with $\pt^\mu > 10$ GeV/c and $2.5 < y^\mu_{\rm cms} < 4.0$, in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV. The measured cross sections and the asymmetry are compared with predictions using the CT14+EPPS16  combination, nNNPDF2.0  nPDF model, as well as calculations with the CT14  PDF without nuclear corrections. All the calculations include the isospin effect. The vertical bars and boxes around the data points indicate the statistical and systematic uncertainties, respectively.