Have you asked your daughter if she claimed you? She may have claimed you even if you don't meet the requirements to be claimed by her. You don't have to live with her but she would have to provide more than half your total support in order for her to claim you legally. Here are the requirements for you to be claimed by your daughter:
1. The person cannot be your qualifying child or the qualifying child of any other taxpayer. A child is not the qualifying child of any other taxpayer if the child's parent (or any other person for whom the child is defined as a qualifying child) is not required to file an income tax return or files an income tax return only to get a refund on income tax withheld.
2. The person either (a) must be related to you or (b) must live with you all year as a member of your household.
3. The person's gross taxable income for the year must be less than $4,200 in 2019. This does not include Social Security.
4. You must provide more than half of the person's total support for the year. This must include Social Security.
5. The person must be a U.S. citizen, U.S. resident alien, U.S. national, or a resident of Canada or Mexico.
Unfortunately if she claimed you there is not much you can do quickly to resolve the issue to get a stimulus check.
If she did claim you, the only way to have a chance to get the stimulus payment this year is to file a tax return. If you did that, then both you and your daughter would be claiming you and the IRS would have to contact both of you to determine who could rightfully claim you. That would probably not be done until late in the year or even next year.
You can file a tax return for 2020 in early 2021 and get the stimulus payment then. It is actually an advance on a 2020 credit.
