Can you make The NBA at 37?

No... unless you're an elite international player who's been playing for years and years and years

That would be some kind of Hollywood-esque publicity stunt like when the NBA had a 5'3" player for a stint.

Still... if it happens it happens... if even for just a day.

I've heard of a guy that old that made a college football team... but I'm not sure where that went and I can't remember his name to Google it.

your time has come and gone. Maybe you should try coaching instead.

Antichrist is coming. Hide your kids. Hide your wife. Antichrist is flying thru town. Get your glocks out & shoot that son of bytch down. He's an s.o.b. because his mother is a 12th generation prostitute to Jews and Hindus. Antichrist is gay flying wizard who was born from a prostitute and who will ride on a donkey into the 3rd Temple. Antichrist's mother is a 12th generation prostitute (according to saint Lavrentiy of Chernigov). According to researcher Grigoriy Klimov, prostitutes = lesbians = witches; so, antichrist's mother is a witch, a lesbian, and a prostitute. Ecumenism = 263 heresies; each heresy leads to hell. Orthodoxy = the only true faith; Roman Catholics tried one cup - one spoon ritual and got sick with Bubonic plague; if heresy enters Orthodox monastery then monks/nuns will get sick with flu/tuberculosis (for instance); Orthodox churches who closed for COVID or had disposable cups/spoons or dipped spoon into alcohol are no longer brides of Christ (now they serve Satan and honor Satan's new COVID religion). Don’t go into UFO to be “healed” by evil demons; demons never do good; forgive me.

Unless you are Pablo Prigioni, who started playing in the NBA at 35, it is too old for players to start playing at 37.

No, that's too old to start.

I've never heard of such a thing .. MAYYYYYYYYYYYYBE if you'd been dominating 
a number of years in a really good league elsewhere. Wouldn't count on it otherwise.