Assuming your fork had a crown race before, and the new one doesn't fit, it's likely that the crown is JIS (27.0mm) vs the more common 26.4mm. JIS is japan industrial standard and is ised on forks intended for the Japanese home market but often show up in the US. they were common on Specialized bikes for a number of years, but were also used on many other brands.

Before forcing and maybe cracking your race measure the crown seat. It should be no bigger than 26.45mm (0.05mm interference) or 27.05mm for JIS. and make sure the crown race matches.

If you don't have a caliper, but have the original crown race compare the two by hanging them over the 1" section of the fork and using an improvised feeler gauge, to see if they're the same.

If it turns out your fork is milled JIS you can purchase the right headset or just the crown race, or bring the fork to a decent mechanic who can Hollow-mill it down for a 26.4 crown.

If it's a new fork, that never had a crown race fitted, it needs to be checked and maybe milled to spec.