SEO

I have talked before about my website (temdb.com) which is IMDb alternative for the Egyptian cinema , there is already a website like this but it is old and crappy(gets 8 million visits a month through organic search though , their domain authority is 66 , most ppl here just go to it because it is the first result) , I have all the content and things , now If I want to hire someone to increase my rank(possibly make me second because literally no other website do the same thing except that one and mine , all other results are random blogs)

2. How much will I pay
3. How long will it take
4. What are the results to expect