I have a client i m doing adwords for however 1 of his competitor always seems to rank on top of him

Apply bid strategy “Target outranking share” (from shared library) or

There are 3 types of bid estimates available in the Keywords tab to help you get your ads on the first page of search results when a search query matches your keyword.

First page bid estimate: the bid you likely need to set for your ad to be shown anywhere on the first page of search results.

Top of page bid estimate: the bid you likely need to set for your ad to be shown among the ads at the top of the first page of search results.

First position bid estimate: The bid you likely need to set for your ad to be shown in the first position at the top of the first page of search results.

Read more here – https://support.google.com/adwords/answer/6292677?hl=en