As for me, my voice leaves lots to be desired, but if Bob Dylan can sing, so can I! So no, I can’t sing like Celine Dion, but few can! Just have fun. I’m a bit shy when singing, that’s my big issue to overcome as I’ve never had to sing for anyone except in church (God has never told me to shut up either).
As a start, you might want to find a few songs you enjoy singing that you can sing all of the notes to see what is in your vocal range. This may help determine what key you are suited for. I recall when I was studying to be a teacher, my music teacher said most kids can sing in the key of C.
I know there’s much more to it that this, but I’m learning too! Have a great journey!