The Ranjana script is not yet in Unicode. The script has a tentative allocation at U+11500..U+1157F in the  Roadmap to the SMP for the Unicode Standard.

A number of proposals for its inclusion have been submitted to the Unicode Technical Committee and WG2:

2009-05-04 Preliminary proposal for encoding the Rañjana script in the SMP of the UCS — Michael Everson ( WG2 N3649,  L2/09-192)

2009-09-28 Roadmapping the scripts of Nepal — Michael Everson ( WG2 N3692,  L2/09-325)

2012-10-08 Proposal to Encode Nepal Himalayish Scripts in ISO/IEC 10646 — Pat Hall ( WG2 N4347,  L2/12-365)

Review of Indic‐related documents and Recommendations to the UTC ( L2/12-378) (See point II.)

UTC #133 Minutes ( L2/12-343) (See D.10.1 for decision and action items)

2013-12-31 Proposal to Encode Ranjana Script in ISO/IEC 10646 — Dev Dass Manandhar, Samir Karmacharya, Bishnu Chitrakar ( WG2 N4515,  L2/13-243)

2014-09-23 Comparison between Ranjana proposals — Deborah Anderson ( L2/14-221)

2016-01-06 Towards an encoding for the Ranjana and Lantsa scripts — Anshuman Pandey ( L2/16-015)

UTC #146 Minutes ( L2/16-004) (See D.14 for decision and action items)