I have a question I filed head of household with 3 adult dependents that I completely take care of , how much will I get back

[xmasbaby0]

You have not mentioned who the adults are--so we do not know if they even qualify as dependents that you could use to file as HOH.  If they all do qualify, you may be getting the $500 credit for other dependents for them.  

CREDIT FOR OTHER DEPENDENTS

https://ttlc.intuit.com/questions/4499708-what-is-the-500-credit-for-other-dependents-family-tax-cre...

Look at your Form 1040 to see the credit.  It will be on line 13a

PREVIEW 1040

https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing

[VolvoGirl]

Or are you asking how much you will get for the Stimulus Check?