His stats are amazing. Same goals and assists as Mane in the league, who is considered world class, but I think Rashford has played less minutes (not 100% on that).
Comparing stats for this season across all competitions:
Sterling (36 G+A) : 27 goals, 9 assists in 3572 minutes - 132 min/goal, 396 min/assist, 99 min/g+a
Jimenez (36 G+A) : 26 goals, 10 assists in 4133 minutes - 158 min/goal, 413 min/assist, 114 min/g+a
Salah (35 G+A) : 23 goals, 12 assists in 3956 minutes - 172 min/goal, 329 min/assist, 113 min/g+a
KDB (34 G+A) : 13 goals, 21 assists in 3376 minutes - 259 min/goal, 160 min/assist, 99 min/g+a
Mane (33 G+A) : 21 goals, 12 assists in 3607 minutes - 171 min/goal, 300 min/assist, 109 min/g+a
Vardy (30 G+A) : 23 goals, 7 assists in 3248 minutes - 141 min/goal, 464 min/assist, 108 min/g+a
Martial (30 G+A) : 22 goals, 8 assists in 3125 minutes - 142 min/goal, 390 min/assist, 104 min/g+a
Son: (30 G+A) : 18 goals, 12 assists in 3005 minutes - 166 min/goal, 250 min/assist, 100 min/g+a
Aguero (27 G+A) : 23 goals, 4 assists in 2092 minutes - 90 min/goal, 418 min/assist, 77 min/g+a
Ings (26 G+A) : 23 goals, 3 assists in 2919 minutes - 126 min/goal, 973 min/assist, 112 min/g+a
Auba (25 G+A) : 23 goals, 2 assists in 3365 minutes - 146 min/goal, 1682 min/assist, 134 min/g+a
Kane (23 G+A) : 21 goals, 2 assists in 2860 minutes - 136 min/goal, 1430 min/assist, 124 min/g+a
Rashford (33 G+A) : 22 goals, 11 assists in 3019 minutes - 137 min/goal, 274 min/assist - 91 min/g+a
Only Sterling, Aguero, Ings and Kane have scored at a faster rate, and only Ageuro has a better rate of goal/assist contribution.
Also, of course I did Bruno's numbers, but it's England + Portugal :
Bruno ( 45 G+A) : 23 goals, 22 assists in 3830 minutes - 166 min/goal, 174 min/assist - 85 min/g+a
Edit: Rashford is over 2 years younger than the next person on the list - Martial (who himself is a full year younger than the next person on the list - Sterling).