Farage said about 100 Scottish candidates had undergone vetting and training in London.
The Reform UK leader told reporters: “I think we can surprise ourselves with just how many votes we manage to garner in these elections.”
He added: “A huge chunk of the Scottish electorate are looking for something different. And they’re tired of the decline this country has seen under SNP government.”
Farage spoke as UK Conservative leader Kemi Badenoch announced that she had sacked Tory shadow secretary Jenrick for “plotting to defect”.
The Reform leader confirmed he had spoken with Jenrick and “a number of very senior Conservatives”.
He said that for all of the talk of a supposed “Kemi bounce” a lot of Conservative senior politicians realise that the Tories will be “obliterated” in elections in Scotland, Wales and England in May.
Farage denied that he had signed a deal with Jenrick, but said he had “little doubt” that leaving the Conservatives to join Reform had been in the Tory frontbencher’s mind.