In California, you are required to submit to chemical testing (breath, urine, or blood — I don’t recall the rules for which applies in which situations). However, you are not required to otherwise talk to or perform the absurd procedure of the field sobriety test (“you have the right to remain silent”).
For example, https://www.gov.uk/stopped-by-police-while-driving-your-righ....
I took OpenAI's references as correct without checking legislation as I'm on my phone.
If the police decide to have you exit the car and do the field tests, the odds are high they have already decided to arrest you. At that point, it's best to refuse all unless you have had absolutely zero drugs/alcohol. And then the question has to be why did they have you get out the car.