On the good side - gender and sectarian persecution, as a matter of principle and practicality, is less in Arabia and around the Islamic world. In practice, instrumental causes will still lead to many sectarian and some gender biases in Arabian and Muslim society. No 9/11. No Islamist guerrilla violence in many parts of the world like Southeast Asia and Sub-Saharan Africa. The occasional religious-motivated assassin will still surface from time to time.
On the (potential) bad side:
Nasserist Saudi Arabia tilts hard to the USSR and destabilizes other Arabian monarchies.
Early, deeper and longer oil crisis for the consuming world.
Minimal reinvestment of Persian Gulf oil money in various sectors of developed world economies.
Nasserist Arabia supports Arab nationalist terrorism around the world against exiled regime opponents, westerners and Israelis through the 70s, 80s and beyond. This may have included attacks within CONUS.
Lack of Persian Gulf oil producer symbiosis with the US and west may mean Soviet bloc survives on oil revenue rents into the 20th century.
US defense industrial base further deteriorates in 1970s due to lack of Persian Gulf paying customers, even while Israel and Iran remain big customers in the 70s.
No Egyptian-Israeli peace, Nasserist Arabia subsidizes Egypt's "frontline state" status.
The first Nasserist coup is probably not the last. There are likely follow-on coups (Nasserist, Baathist, militarist or other), possibly civil wars and revolutions in Arabia, costing many lives.
More on the (potential) good side:
More non-fossil fuel energy tech development
Israel, focused on the Egyptian and Syrian fronts, never does a deep invasion of Lebanon, doing, at most, shallow incursions and stand-off strikes. No Falangist massacre of Palestinian civilians, no Hizballah