I bought a Sync and Obsidian is saying I don't have a sync I am wasting time here how do I fix this

I bought a Sync and obsidian is saying I don’t have a sync account

you are a bit light on details.
Follow this guide https://help.obsidian.md/Obsidian+Sync/Introduction+to+Obsidian+Sync and if you are still lost
send an email to [email protected].