Semileptonic B-decays at Belle and Belle II

The paper summarizes recent results from the Belle and Belle II collaborations on semileptonic $B$ decays measurements including inclusive and exclusive determination of Cabibbo-Kobayashi-Maskawa matrix elements $\mathrm{\mid }{V}_{cb}\mathrm{\mid }$ and $\mathrm{\mid }{V}_{ub}\mathrm{\mid }$ and lepton flavor universality tests studies. The results are based on the full Belle data and 361 fb${}^{-1}$ Belle II data samples collected in 2018 - 2022.