Sorry with respect it is nowhere close to the necessary standard.
Aside form anything one page files are a very competitive market so you need to have something special to compete and there is nothing unique to your file really.
Beyond that your file is NOT a theme it is a TEMPLATE. WP = Theme and HTML = Template.
You have over 100 validation errors?
There is something very strange with the scrolling
Typography needs a lot of work
that about us accordion looks completely out of pace and natural
There are fundamental spacing and alignment issues.
I suggest you consider the refinement in existing files first then try to evolve yours perhaps. Good luck
Thanks charlie4282 For that useful info