How long does does it take to pick up E-5 in the Army if you’ve been an E-4 in the Marines for 2 years?

SPC Onel Cruz what he said, but that's the very minimum with waiver. Realistically, probably a year or two. You're heading into a low density MOS which means more competition for promotion, which means higher promotion points. That's also with being recommended for the board as soon as you're eleligible.

SFC (Join to see) How do you get these points? Is it all based on time or performance?

SPC Onel Cruz it's broken up into areas. PT score, weapons, correspondence courses, awards, and college credit.

SPC Onel Cruz - Structured Self Development (SSD) will be replaced by Distributed Leader Course (DLC) by the time you are in the Army Reserve. DLC 1 is required to be considered for E5 and enrolled in Basic Leader Course. DLC 2 is required to be considered for E6 and enrolled in Advance Leader Course, DLC 3 is required to be considered for E7 and enrolled in Senior Leader Course.

Yeah I only completed the cpl’s online portion while I was in, im just concerned whether my time in service and in rank carry over the same even if I was out the military for a bit.

Credit for BLC is possible with the USMC resident Sergeant Course, NCO course, the Pendleton Squad Leader Couse, Quantico Staff NCO course, the complete list of USMC schools creditable for BLC can be found in AR 600-8-19 Ch 7-24. Online classes won't count.

TIS should carry over, rank may or may not. It is possible you may have to take a hit depending on how long a break in service you have.