Each child needs at least two Godparents, of whom there needs to be one man and one women. After that, there are no actual limits. Traditionally, a boy gets two Godfathers and one Godmother, and a girl gets two Godmothers, and one Godfather, but there are no limits.
To be a Godparent, you need to have been baptised yourself.
If you have a friend who you would like to be a special part of your child’s life, but they are not baptised, in the Church, we would term them as ‘Sponsors’, but they can still be part of the service, if they so choose.