You can change your studio / business name on your account by navigating to Settings > Account & Billing. This name is for communication with ShootQ customer service. Your clients will see your brand name on their invoices (below) which can be different than the business name (or they could be the same; it's your choice).
In example below, ShootQ Team Account is the business name. This account has several brands - LaCour Demo, Portraits Plus, Commercial-Advertising, LaCour Fine Art, and Wedding Supreme.
To change your brand(s) name, navigate to Settings > Brands and then click Update Contact Info next to the appropriate brand. To learn more about creating and managing your brands, read this article.