You can access your email by going to mail.study.beds.ac.uk and logging in using your username and password. Even though you may have a personal email account you need to check your university one on a regular basis to read important emails sent from your course or the university.
Plus it means you also have another email account that you can use in professional academic communications to your tutors or businesses. An email from firstname.lastname@example.org might get you further than one from email@example.com!
Your university email address will be: firstname.lastname@example.org.
To get started watch this short video and check these help guides