As someone said- you can't do it alone- you need minimum of 2 leaders for a troop. (Though if you check with council, there may be someone else who's said they will do it, and they are waiting on a second leader.)
EVERYONE was a newbie leader at some point. I've done cub, girl and boy scouts and recruited for all of them. I always hear "but you know how to do this stuff already". I assure you, I didn't when I started out. (My cubs all survived, and the 4 left in scouts now in high school are on the cusp of Eagle award. Guess something worked out ok! :

)
Point being, don't let that stop you.
There is training from the council that you'll need to take. (Some of it hohum, some of it good practical info.) There's even a hand out we get called "your first four meetings" which- spells it all out for you!
As another said, definately start out slow. But a meeting really truly can be as easy as pick a badge (none of them are rocket science

) and pick 4 things to do.
My other advice is to enlist other parents help.Even when it seems no one is willing to be a leader, about anyone you ask will do some tasks. "Could you be in charge of snack for next week's meeting?" "Could you pick up these craft supplies for our Christmas project?" Sometimes it seems easier to do it yourself (many times it is

) but get the other parents involved. When you spread out into more advanced projects or trips, they will already be used to doing their part. Much easier on you!
And, getting all mushy- the times I've spent with my kids in scouting are definately some of the best I've had with them. I won't say I haven't complained about things away from the kids, but I've never regretted a minute I've committed to them in scouts!