Unless you use a dedicated functional like vdw-DF, most functionals do not come with suitable integrals that would describe van der Waals forces at all. Therefore, there are corrections like Tkatchenko-Scheffler or Grimme. Depending on the system, one or the other may be the better choice, that's something you'll have to check the literature for.
Bensafi Toufik as it was already pointed out, dispersion correction is almost mandatory for non-covalent interactions (NCI) unless you use functionals like vdw-DF. We tested several functionals and dispersion corrections for crystalline objects here: Dubok, A. S., & Rychkov, D. A. (2025). What Is More Important When Calculating the Thermodynamic Properties of Organic Crystals, Density Functional, Supercell, or Energy Second-Order Derivative Method Choice? Crystals, 15(3), 274. https://doi.org/10.3390/cryst15030274
If you are interested in gas phase calculations (or in solvents), I can recommend to look at work of prof. Grimme, where various parameters were described (including NCI estimation): Bursch, M., Mewes, J., Hansen, A., & Grimme, S. (2022). Best‐Practice DFT Protocols for Basic Molecular Computational Chemistry**. Angewandte Chemie, 202205735(April). https://doi.org/10.1002/ange.202205735
Different methods, including those for H-bonds, stacking and other weak interactions were also compared for high-pressure structures here: Fedorov, A. Y., & Rychkov, D. A. (2020). COMPARISON OF DIFFERENT COMPUTATIONAL APPROACHES FOR UNVEILING THE HIGH-PRESSURE BEHAVIOR OF ORGANIC CRYSTALS AT A MOLECULAR LEVEL. CASE STUDY OF TOLAZAMIDE POLYMORPHS. Journal of Structural Chemistry, 61(9), 1356–1366. https://doi.org/10.1134/S0022476620090024
Hope, it helps
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