Redshift-space 2PCF (black dots) of the AMICO KiDS-DR3 clusters in the spatial range s ∈ [5, 80] h⁻¹ Mpc, and redshift ranges z ∈ [0.10, 0.30] (top panel) and z ∈ [0.35, 0.60] (bottom panel). In both panels, the grey band represents the 68% confidence level derived from the multivariate posterior of the free parameters considered in the cosmological analysis, described in Sect. 4.1. The model computed by assuming the cosmological parameters derived by Planck (Planck Collaboration VI 2020, Table 2, TT, TE, and EE+lowE; blue lines) and WMAP (Hinshaw et al. 2013, Table 3, WMAP-only Nine-year; red lines) is represented by the solid blue lines and by the dashed red lines, respectively. In both cases, the median values of the scaling relation parameters derived by Lesci et al. (2022) are assumed.