Answer:
In RFEM, the results of the soil pressure are referred to as "contact stresses" and can be displayed on the model using the Results navigator.
You can select the contact stresses for display under the Surfaces and Members section. For surfaces, for example, sigma-z represents the stress in the transition to the foundation (see the image).
In tables, the results are shown in result tables 4.21 Surfaces – Contact Stresses and 4.7 Members – Contact Forces. For surfaces, it is also possible to display the total sum of the contact stresses of the individual surfaces in Table 4.21 Surfaces – Contact Stresses.
These tables are also displayed in the printout report.