Your standard deduction is not affected by claiming a dependent, although you might get certain other credit(s) for claiming a dependent.
It sounds like you are filing a joint return and one spouse is 65 or older if your standard deduction is $30,750.
The standard deduction makes some of your income “tax free.” It is not a refund. You will see your standard or itemized deduction amount on line 12 of your 2024 Form 1040.
2024 STANDARD DEDUCTION AMOUNTS
SINGLE $14,600 (65 or older/legally blind + $1950)
MARRIED FILING SEPARATELY $14,600 (65 or older/legally blind + $1550)
MARRIED FILING JOINTLY $29,200 (65 or older/legally blind + $1550)
HEAD OF HOUSEHOLD $21,900 (65 or older/legally blind + $1950)
@volt-1948 Where are you getting the 33,850 or the extra $3,100 to make 33,850? That isn't even the 2025 standard deduction amount.