Worked for Youngkin. There's a certain set of repubs and independents that still loathe Trump. Not everywhere but in some places like suburbia. A deep red place, sure, go for a Trump endorsement. Swing place, might want to not talk about Trump even if he endorses you.
My advice: The GOP needs to ditch globalism and corporatism and take up pro America nationalism, protectionism and be the party of the working class ( which the are not now ).