How many matches has he wrestled and what are the ncaa tournament seeding requirements
He has 3 matches (all at 157, all D-1 opponents, none against a teammate), with a 2-1 record.
Conference allocation and at large ranking are too complicated to completely address here. Suffice to say, it's best to have 15 matches. Barring 15, next best is 8. So he needs 12 or 5 more, respectively.
Different conference allocation / at large ranking criteria require a minimum of matches. As examples, a minimum 8 D-1 at the weight not against a teammate, the last being within 30 days, is required for a coaches' ranking. Similarly, a minimum of 15 is required for an RPI calculation and 8 for a winning percentage calculation.
To earn a pre-allocated spot for the conference (winner of tournament doesn't count, as they automatically qualify for NCAAs), a wrestler must have a minimum of 8 matches. That means matches during the B1G tournament cannot be considered for this.
It also seems one has to be formally identified as the starter to have their winning % and RPI calculated. I only mention this, because there has been some speculation of intentional or unintentional Iowa clerical errors in the past, which didn't update their NCAA D-1 Starters Page.
Regardless, Jacori could always 'steal' a conference allocation earned by another B1G 157lber. And he has to participate in the B1G tournament (i.e. step on the mat) to be eligible for NCAAs. This may be his best route, if he does not return until late in the season.
Seeding for the NCAA tournament depends to some extent on the final coaches' ranking, which may be the biggest wildcard.