Hi Rishi,
Thank you for reaching out to us on Microsoft Q&A forum.
Please click on the link as provided in the below.
https://www.microsoft.com/en-gb/dynamics-365/products/business-central
Upon clicking the link, you will be directed to a page where you can find the "Try for Free" option. Provided in the screenshot Please click on that.
Upon clicking the link, you will be directed to the below screenshot provided page.
Business Central doesn't support email addresses that are provided by consumer email services or telecommunication providers such as outlook.com, hotmail.com, gmail.com, and others.
If you try to sign up with a personal email address, you'll receive a message indicating that you need to use a work or school email address.
Please try to use a work or school email address to sign up.
Upon submission of the work email address, you may proceed with commencing the free trial process to practice the session.
If you are still facing any issue, please let us know in the comments. We are glad to help you.
If the information is helpful, please Accept Answer so that it would be helpful to community members.
Thank you.