The Indigo Credit Card credit limit is $300. This is a standard starting credit limit for an unsecured credit card for people with bad credit, and it allows you to borrow for any small emergency expenses that might pop up. It's important to note, however, that cardholders may start out with less available credit, since the card's annual fee will be charged when the account is opened.
Having said that, it is also worth noting that it's not possible to later request an Indigo Credit Card credit limit increase. The credit limit that you are assigned upon approval cannot be increased.
Ultimately, keep in mind that your credit limit will be determined based on a variety of different factors, but the two most important are your credit history and disposable income.