Replacing capacitor with more than but close to farad value
The safest option would be to order the same capacitor from digikey, mouser or another distributor. This will ensure that you do not alter the function of the circuit.
As for what will happen if you use a different value, given that this is an electrolytic capacitor, there is a good chance that this is a power filtering or similar application where a slightly larger would probably work. You'd have to look at the details of the specific circuit to be sure however.