The Tulu script is not yet in Unicode. The script has a tentative allocation at U+11380..U+113DF in the Roadmap to the SMP for the Unicode Standard.
A preliminary proposal for its inclusion has been submitted to the Unicode Technical Committee and WG2:
2016-08-18 Preliminary proposal to encode Tigalari script in Unicode — Vaishnavi Murthy K Y ( L2/16-241 password protected)
Recommendations to UTC #149 November 2016 on Script Proposals ( L2/16-342) (See point 2.)
UTC #149 Minutes ( L2/16-325) (See D.2 for decision and action items)
2017-04-17 Request for editorial updates to Indic scripts — Srinidhi A, Sridatta A ( L2/17-098)
Recommendations to UTC #152 July-August 2017 on Script Proposals ( L2/17-255) (See point 7.)
2017-05-26 Comments on encoding the Tigalari script — Srinidhi A, Sridatta A ( L2/17-182)