The Pungchen script is not yet in Unicode. The script has a tentative allocation at U+1E500..U+1E52F in the  Roadmap to the SMP for the Unicode Standard.

One proposal for its inclusion has been submitted to the Unicode Technical Committee:

2017-05-25 Preliminary proposal to encode the Pungchen script in Unicode — Anshuman Pandey ( L2/17-181)