Clean up Shopify website

I need someone to clean up back end of site. - Make sure I am getting the best traffic- aligning with google - SEOs ok
Checking all the things that this website mentions. But I do not have the time or knowledge to do
https://www.ultimateretailgrowth.com/landing-2?gclid=EAIaIQobChMI3qm7l97D8wIVjKXICh3CKQajEAAYBCAAEgII2fD_BwE