Hi @Nancy ; welcome!
Let’s ignore that the pandemic exists and hope that everything is available next year! I have been to the British GP (Silverstone), Belgian GP (Spa) and Italian GP (Monza) and loved them all for different reasons. You mention being based in the US, so you also have fairly closer options in Texas, Miami, Mexico City or Montreal. I’d recommend Monza, for incredible atmosphere, (almost) guaranteed good weather, great food and passionate, friendly fans. You can fly into Milan and there are good options for hotels or camping, depending on your budget.
When you decide where you’d like to go, I’m sure people on here can recommend specific grandstands and experiences to make it a great trip for you and your husband.