Yes, even if you do not qualify to receive benefits on someone else's record, some members of your family may qualify to receive benefits on your record.
and can I add them?
Are you interested in obtaining information about the benefits for your family?
not
never married or had children?
Yes, i got married
some family members may not qualify for benefits on your record for now
About what I could receive in the benefit, how much will I be deducted if I am not of full retirement age from what I earn?
You'd get deducted 1$ for every 2$ you earn above the annual limit.
And if I earn more this year than the previous year?
then your benefits will get recalculated.
How do you check the earnings?