See here for how to respond to a Supply job invitation.
If you receive an invitation to apply for a Permanent or Fixed Term job, you'll receive an email and text message. Open the link it contains, log in to the Teacher Booker app and you'll be taken to your dashboard.
Click the 'Permanent Jobs' tab from your menu and you'll see the job displayed like the below (on mobile). Click 'View & Apply' to review the full Job Description, and if you like the look of the opportunity click 'Apply'. The school will be notified and your Profile, CV, Education & Employment History and contact details made available to them.