Can I use my mother on my taxes if I took care of her in my home on 2022. She files her own taxes for her income for retirement &SS & Medical.

How much retirement does she get?  You can only claim her if she had less than $4,400 total income not counting SS.  If she is filing her own return that suggests she doesn't qualify as your dependent.  

Who can you claim
https://ttlc.intuit.com/community/credits-and-deductions/help/who-can-i-claim-as-my-dependent/01/26781

No, not if you took care of her home.

You can only claim your mother as a dependent if you provided more than half of her support in 2022 and she had gross income of less than $4,400.

Please read this TurboTax article for more information.