Do any restaurants still accept cash for curbside pickup?

Yes, some restaurants do. Most prefer prepaid or cards.

Some of restaurant still accept cash and other not accept cash for curbside pickup.

I would assume at least ONE

Noooooooooooooooooooooooooo

No. The plague and an overreaching government has trained us not to use cash. Although they say if is for safety reasons it is probably more so for them to track our every purchase and use the information for future taxes. If you buy unhealthy potato chips you will get a fat tax. If you buy too much gasoline and your work is only a few miles away from home, you'll get an excessive driving tax. The wicked government is everywhere.

I am sure that some do.  You would need to ask before placing your order.  Often the issue is that they do want people standing outside with a lot of cash so they can make changes.  Have the exact amount (or something close enough that you can give them the left over as a tip) is helpful.

Yes............

Some do and others don't