I got my first beardie about 3 weeks ago. she seems to have adjusted to her new home enough but every time I walk by or especially put my hand in the terrarium she freaks out, runs, or claws at the glass in a panicked fashion. I know she doesn't trust people that much right now as she had been in the medical recovery room of the pet store I bought her at (I work at the store) and associates being touched/ handled with the vet and care she had gotten during her recovery. I'm starting to get worried as she definitely wants to get out of the terrarium but not with me haha. Is there anything I can do to get her more accustomed to me/being handled/etc?
That can take quite a long time in some cases. Just be patient with her. It may help to offer a treat by hand when you are near the tank. I wouldn't be too pushy about handling if she doesn't like it but if she wants out perhaps give her time to roam around in a safe area of the house. She may enjoy having a portable basking light set up as a place to warm up. Just be sure there aren't any other animals around or other dangers such as dropoffs or heavy objects that could fall and cause her harm.