If you know literally 0 strategies on playing Monopoly then here's a few of them, they may or may not be useful for speedrunning but then again this game is almost pure RNG anyway so...

-Aim to get the Pink, Orange and Red properties. Orange properties are statistically the most landed on and they're not too expensive to build on. The properties I would avoid are the Yellows, Greens and possibly Dark Blues (though the payoff you get from them is so absurd it's almost worth it)

-Do not bother with Utilities, the only time they generate you a decent amount of money is when your opponent gets the Chance Card that forces them to move to the closest one and pay double WHILE you own both of them. Other than that the most you can ever make is 120 Cash which is highly unlikely. If you land on a Utility that no one owns just Auction it.

-Stations are debatable, some say they're great since there's 1 station on each side of the board, others say they're not worth it. I wouldn't bother considering the amount of effort it takes to get them all compared to just getting a standard Monopoly though it's up to you.

-Once you get a Monopoly, mortgage everything else you own and build as many houses as you can on them, the payout is worth it if your opponents land on it.

-If your opponent has a bunch of properties that you want to stay away from, one tip is to try and stay in jail for as long as possible

-Once you have a Monopoly, create a "house shortage" by building as many houses as possible but NOT building hotels. If you do this across multiple Monopolies your opponents won't be able to use any houses for their own.

That's about it, if I come across anymore I'll update this page.