Presently the Psychology NCERT solutions aren't available in career platform. I think if you may search on the google search then you will get a ample number of links to download the solutions.

Sorry for your inconvenience!

For Physics, Chemistry, Biology, Mathematics solutions of 12th NCERT you may visit the link below:

https://school.careers360.com/ncert/ncert-solutions#---NCERT-solutions-for-class-12---

I hope my answer helps. All the very best for your future endeavors!