The shelf location and call number may not be displaying if you have not input copy data for this title.
If you already have input copy data, or if the above steps don't resolve the issue, please try resaving the LHR without making any changes. Check Discovery after resaving to see if the information displays again.
If none of the above steps resolve the issue, contact OCLC Support with your OCLC Symbol, the OCLC number of the record, and a description of the steps you've tried so far.