rspo/stat/query is a SAP Parameter attribute which is used to control Write statistic data for printer queues into TSPQSTAT information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
0 deactivates writing the statistics data.
1 wrties data for each query of a printer using the
wait list in table TSPQSTAT. If the wait list is empty of the query is
deactivated on the printer then nothing is written.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.