I have been trying to up my quality score on word for a long time.

In a previous acct on a site I had 10/10 now I cant break higher than 6/6 and the site has the same content and everything.

Any suggestions on getting a higher score? I have the KW in title, alt tags, description, H1 all those basics.

You did not mentioned the main factor when it comes to QS - the CTR. How good is it? There are no benchmarks for what a good CTR is, but it is what drives your QS high the most.