You can check out the 2020 Women's Vote Centennial Initiative (WVCI) website. Here's the link:https://www.2020centennial.org/.
It has a list of events and programs, ways for you to get involved and FAQs.
The National Archives Museum in DC has an exhibit called Rightfully Hers: American Women and the Vote
. Also, read the Smithsonian's Votes for Women.