The courts and DMV are 2 separate entities. You can win the battle in one and lose in the other. You will need to take school to get your license.

How many actual days will my husband serve if he was served with 90 days?

He should serve 45 days or less depending on the jurisdiction and jail overcrowding

Warrants in other states will typically prevent the issuance of a drivers license. Take care of warrants- get an attorney

According to what you have stated, he appears he got sent to state prison.

Will a marijuana infraction go on my record or will it go away?

it should go away in 2 years- that is what the law states.

What is a 0.8% 3vi and what does 3vi mean?

I am not certain what 3vi means. I do know that you should get an attorney to deal with this matter.

My boyfriend was sentence to 16 months double cause of a strike with 7 months time served how much time will he do ?

The release date tell you your answer- although he might get out sooner

Get an attorney and fight the ticket. You are eligible for traffic school

Will it still stay on my record?

I am assuming what you received is a civil demand letter. The consensus among attorneys is to ignore such letters. If the police were not called...

Call the clerk of the traffic court and they will tell you the bail amount. The 2 correctable violations are $25 each- get an attorney.