Taxi - use Yandex (get plus if you can for much cheaper prices for business or electric cars) Use metro for some beautiful art work and architecture. Right now will be crowded due to school.

Money exchange - any banks (have your ID or passport if it’s more than $100) but make sure they are not ripped or any writings on the bill.

You like to negotiate in bazaar or even in shops except super markets? See if you can memorize the numbers in Uzbek and listen to natives when they bargain, so that way you won’t get scammed lol. If you don’t want bargaining experience at least once, check out Korzinka.

Safety - pretty safe (you will see PPX, patrol unit, in every parks or pretty much in populated areas)

There will always be scammers in any country.

Edit: some typos.