I have been a charity secretary on and off almost all of my adult life. I'd say, as others have:
Do you get on with others on the committee? You don't have to be great friends, but you do have to work together
You say ' take care of money'. Why? There should be a treasurer, and if there isn't, then ask how the finances are done. You don't want to take on 2 jobs!
Ask about specific responsibilities. I imagine there is a fair bit of Health and Safety paperwork, and grant applications. Does a lot of this fall to the Secretary, or are there other committee members who take that on?
I agree with others who say that you should proceed carefully. Can you talk to the previous secretary?
Having said that, I am enormously grateful to the people, including my parents, who did these tasks for sports clubs, and enabled me, my children and grandchildren to benefit. I hope you do feel that you can.