There were 3 separate employer W-2's; the social security taxes in box 4 for each employer was correct - taking box 3 times 6.20%. Do not understand why there would be an excess of $251 reported in Form 5. Need to know how the $251 number was calculated.
If you had more than one employer and the total of box 4 (only box 4 not box 6) on all your 2018 W2s for Social Security is more than $7,960.80 you get the excess back on your tax return. And it is for each spouse separately, not combined. Check 1040 Schedule 5 line 72 for it. Then Schedule 5 goes to 1040 line 17.