Hello and welcome to the forums!
How is your budgie doing? Budgies make a variety of different sounds including "squeak" sounding chirps but also can sound squeaky or strange when they are in respiratory distress or are unwell. If her "squeaking" is still concerning and you don't have a way to post any video, it's best in all cases to take her to the vet. Even if she's perfectly fine, it's a good idea to establish a healthy baseline with your bird for future reference as well as to meet the vet in person.
Meanwhile, you've come to a great place to learn even more about the best of budgie care practices. Please be sure to read through the links provided above to ensure you're up to date on everything! If you have any questions afterwards, please be sure to ask as we'd love to help.
Hope to hear updates soon! 👋