Can I claim my girlfriends expenses as a dependent? She has no job and I have been fully carrying all financial expenses for the both of us. If so what can I claim?

You can claim your girlfriend as a dependent (qualifying relative) if she passes all the following tests:

1. The person can't be your qualifying child or the qualifying child of any other taxpayer. 
2. The person must live with you  all year as a member of your household (and your relationship must not violate local laws). 
3. The person's gross income for the year 2023 must be less than $4,700. 
4. You must provide more than half of the person's total support for the year.
5. The person is a U.S. citizen, U.S. resident alien, U.S. national.
6. The person is not a married person who files a joint return unless that joint return is filed only to claim a refund of withheld income tax or estimated tax paid.