Only your husband's SS or SSDI if you file a Joint return. If you file separately then he will have to file his own return for it.
If your son only got Social Security or SSDI or ssi he doesn't have to file a return and nobody reports it.
Filing requirements for a dependent
https://ttlc.intuit.com/community/children-dependents/help/do-i-need-to-file-my-own-taxes-if-i-m-a-d...
