How much power does Jesus have?

This question does not have a straight forward answer.

If by “power” you mean “authority” (i.e. freedom to exercise his own will), then Jesus has as much freedom as God has given him. Jesus says “All authority in heaven and on earth has been given to me” (Matt 28:18). God is still God, but God has given Jesus all authority in heaven and on earth. Jesus exercises this authority on God’s behalf, and when he has completed the work he will return that authority to God; “When he has done this, then the Son himself will be made subject to him who put everything under him, so that God may be all in all” (1 Cor 15:28).

If by “power” you are asking if there some things that God can do that Jesus can’t, then we are not given a clear-cut answer in the Bible.