By dynamic force do you mean time-dependent force ? This can be achieved with *AMPLITUDE. But you have to choose the type of load first. For concentrated force use *CLOAD.

Amplitude is already present and used for acceleration boundary condition in that input file. If you want to use it for concentrated force instead, you have to replace *BOUNDARY with *CLOAD. But the rest is up to you - where the force will be applied, in which direction and with what magnitude (multiplied by the amplitude for a given time). You also have to define the amplitude in a tabular form. In the attached input deck its definition is contained in a separate file.

When I try running my inp file i had the following errors

You are using an executable made on So 31. Jul 13:26:31 CEST 2016
The numbers below are estimated upper bounds
number of:
nodes: 126
elements: 40
one-dimensional elements: 0
two-dimensional elements: 0
integration points per element: 27
degrees of freedom per node: 3
layers per element: 1
distributed facial loads: 0
distributed volumetric loads: 1
concentrated loads: 0
single point constraints: 18
multiple point constraints: 1
terms in all multiple point constraints: 1
tie constraints: 0
dependent nodes tied by cyclic constraints: 0
dependent nodes in pre-tension constraints: 0
sets: 3
terms in all sets: 298
materials: 1
constants per material and temperature: 2
temperature points per material: 1
plastic data points per material: 0
orientations: 0
amplitudes: 3
data points in all amplitudes: 2
print requests: 0
transformations: 0
property cards: 0
*WARNING reading *AMPLITUDE: parameter not recognized:
INPUT=amplitude.inp
*WARNING reading *AMPLITUDE. Card image:
*AMPLITUDE,NAME=AMP,INPUT=amplitude.inp
*WARNING reading *AMPLITUDE: *AMPLITUDE definition AMP
has no data points
*WARNING in calinput. Card image cannot be interpreted:
*WARNING reading the input file. Card image:
STEP1-GRAVITYLOAD
STEP 1
Static analysis was selected
Decascading the MPC’s
Determining the structure of the matrix:
number of equations
360
number of nonzero lower triangular matrix elements
7128
Using up to 1 cpu(s) for the stress calculation.
Using up to 1 cpu(s) for the symmetric stiffness/mass contributions.
Factoring the system of equations using the symmetric spooles solver
Using up to 1 cpu(s) for spooles.
Using up to 1 cpu(s) for the stress calculation.
*WARNING in calinput. Card image cannot be interpreted:
*WARNING reading the input file. Card image:
STEP2
STEP 2
Dynamic analysis was selected
Newton-Raphson iterative procedure is active
*ERROR in CalculiX: in nonlinear calculations
energy output must be selected in the first step

Could you share the whole input file with includes (msh, nam) ? You can use some hosting website like Google Drive, Dropbox or WeTransfer and paste a link here.

Now I have a new error, can you help me to solve it please?

Dynamic analysis was selected
Newton-Raphson iterative procedure is active
*ERROR in CalculiX: in nonlinear calculations
energy output must be selected in the first step