Testing the large coupling of the Higgs boson to $b$-quarks is particularly relevant in order to probe the Higgs Sector, providing at the same time an important input to many new physics searches with final states containing this Higgs decay. These proceedings present the first results of the observation of $H\to bb$ decays and further measurements involving this decay channel, using data from the LHC proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13$ TeV. The differential cross-section of Higgs production in association with a vector boson was measured in the context of the simplified template cross-section and is presented here along with an interpretation based on the effective field theory framework. Moreover, an inclusive search for large momentum $H\to bb$ decays is summarised.