From the above message, we can understand that currently you are a user in the company. Please check with the admin of your company to give you the permission for creating the E-way Bills.
To get permission for creating E-way Bills, please check with your admin to enable the permission by following the below mentioned steps:
Step 1: Go to Invite Users
Step 2: Go to Roles and Permissions >>Select the desired Name >> Click on Edit
Step 3: Enable the desired permissions >> Click on Update Role