I am not sure what papers i need to fill out for my divorce. Do i need to fill out the financial portion even though we havent been together in 3 year

Both parties under Wisconsin law  are obligated to file complete financial disclosure statements within 90 days of the filing date of the divorce or as otherwise directed by order of the court, regardless of the length of the marriage or the facts of the case. If you have filed your summons and petition for divorce, complete your financial as soon as you can, and file with the court with  a copy to your spouse or their lawyer.