European Union (EU) Settled Status Scheme - I have arrived in the UK with leave to enter as a holder of an EU Settlement Scheme Family Permit

You cannot currently claim any benefit that requires you to have a right to reside (for example Universal Credit, Pension Credit, Housing Benefit or Child Benefit), because the leave you have does not satisfy this requirement.   

Once you have made a valid application to the EU Settlement Scheme for settled or pre-settled status, you can access benefits under the rules for people who have made an application and are waiting for a decision.

You can access other benefits that do not require a right to reside, provided you satisfy the conditions for those benefits, including the presence and residence tests. 

While you have your leave to enter, you are not defined as a ‘person subject to immigration control’ and so you are not excluded from any benefits for that reason.