W2 - Box 12a

All my income is exempt under notice 2014-7 for being a live in care provider. So I have 0.00 taxable income on my W2 as expected. But now there is 50,000+ listed in Box 12a code II due to 2024 changes.

My questions are:

1) Do I now need to file taxes and report just Box 12a somewhere, even though its non taxable income and I have 0.00 in total income/wages. This is my only W2 as I only have income from this single source.

2) Even though I'm 100% exempt from income tax, am I still required to pay Social Security tax somehow?