How can I add T&C Check box to 2 step order form?

Hi,

I need to add a check box for Terms and Conditions into the 2 step order form. I need my customers to agree to T&C before purchasing. I found some code in one of the previous answers but it didn’t work for me,I believe I neds to be specific for your page. Could anyone help me with this, please?

This is the page I’m working on: https://www.selfloverevolutions.com/self-love-circle

Thank you!