Below is a demo APDL script that will extract the element number and axial stress on node I of all BEAM188 elements, and then store this data into a file.
This script has to be copied/pasted in a command object under Solution.
In the Details View of the Analysis Settings, set the Output Controls for General Miscellaneous to Yes so that all SMIC and NMISC results are stored in the result file.

/post1
set,last
esel,s,ename,,188 ! selects all beams in the database
*GET,nb_elem,elem,0,count
*DIM,resultats,ARRAY,nb_elem,2
ne_current = 0
*DO,i,1,nb_elem
ne_current = ELNEXT(ne_current)
resultats(i,1)=ne_current
*get,resultats(i,2),elem,ne_current,smisc,31
*ENDDO
*CFOPEN,Beam_result,txt,_wb_userfiles_dir(1)
*VWRITE,
(‘Node number ‘,’SDIR’)
*VWRITE,resultats(1,1),resultats(1,2)
((F5.0,TL1,’ ‘),(F12.3,’ ‘))
*CFCLO
ALLS