how do I know if I qualify for the january 2025 rebate

No one at TT knows if the IRS is sending you the 2021 stimulus $.    The IRS has identified some people who filed 2021 returns and appear to be eligible but who did not use the recovery rebate credit on line 30 of their 2021 return.  The IRS is sending out that money during January to those folks.  We do not know who they are and cannot find out.  If anyone could claim you as a dependent in 2021, you will not be eligible.

Look at your online account with the IRS to see if they send you $1400 in 2021.

https://www.irs.gov/payments/your-online-account

If you were eligible and do not receive a payment soon from the IRS, the other way to get the payment is to r amend your 2021 return to use the recovery rebate credit before April 15, 2025.   If you did not file a 2021 return at all, then prepare one and mail it in.

2021

https://www.irs.gov/pub/irs-pdf/i1040gi.pdf

Here is the IRS 2021 Form 1040
https://www.irs.gov/pub/irs-prior/f1040--2021.pdf

or if you want bigger type use 1040SR for Seniors,
https://www.irs.gov/pub/irs-prior/f1040s--2021.pdf

And 2021 Instructions
https://www.irs.gov/pub/irs-prior/i1040gi--2021.pdf

2021 Tax and EIC Tables
https://www.irs.gov/pub/irs-prior/i1040tt--2021.pdf

Sch 1 : https://www.irs.gov/pub/irs-prior/f1040s1--2021.pdf
Sch 2 : https://www.irs.gov/pub/irs-prior/f1040s2--2021.pdf
Sch 3 : https://www.irs.gov/pub/irs-prior/f1040s3--2021.pdf