I am filing as independent for the first time, but I am still being asked for my parents' information. What if I don't have the information being asked for Form 8615?

[macuser_22]

You need to get it.

https://www.irs.gov/pub/irs-pdf/i8615.pdf

Who Must File
Form 8615 must be filed for anyone who meets all of the
following conditions.
1. You had more than $2,100 of unearned income.
2. You are required to file a tax return.
3. You were either:
a. Under age 18 at the end of 2020,
b. Age 18 at the end of 2020 and didn’t have earned income
that was more than half of your support, or
c. A full-time student at least age 19 and under age 24 at the
end of 2020 and didn’t have earned income that was more than
half of your support.
(Earned income is defined later. Support is defined below.)
4. At least one of your parents was alive at the end of 2020.
5. You don’t file a joint return for 2020.

Lines A and B
If your parents were married to each other and filed a joint return,
enter the name and social security number (SSN) of your parent
who is listed first on the joint return.

If your parents were married but filed separate returns, enter
the name and SSN of your parent who had the higher taxable
income. If you don’t know which parent had the higher taxable
income, see Pub. 929.

If your parents were unmarried, treated as unmarried for
federal income tax purposes, or separated by either a divorce or
separate maintenance decree, enter the name and SSN of the
parent with whom you resided for the greater part of the calendar
year. See the definition of custodial parent in Pub. 501.

[macuser_22]

The IRS says:

[quote]

Incomplete Information for Filing

If the parent's taxable income, filing status, or net unearned income of the parent's other children isn't known by the due date of the child’s return, reasonable estimates can be used. Enter “Estimated” next to the appropriate line(s) of Form 8615. When the correct information is available, file Form 1040-X, Amended U.S. Individual Income Tax Return.Instead of using estimates, the child can get an automatic 6-month extension of time to file. For details, see Form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return.

https://www.irs.gov/pub/irs-pdf/i8615.pdf