The proficiency bonus is in the Wizard table of PHB p113. Your Spell save DC equals 8 + proficiency bonus + Intelligence modifier. Your Spell attack modifier equals proficiency bonus + …

Your Attack bonus with a spell Attack equals your Spellcasting Ability modifier + your Proficiency Bonus. Most Spells that require Attack rolls involve Ranged Attacks . Remember that you have disadvantage on a ranged Attack roll if you are within 5 feet of a Hostile creature that can see you and that isn’t Incapacitated .

Your attack bonus with a spell attack equals your spellcasting ability modifier + your proficiency bonus. Most spells that require attack rolls involve ranged attacks. Remember that you have disadvantage on a ranged attack roll if you are within 5 feet of a hostile creature that can see you and that isnt incapacitated.

Your Spell Attack bonus is your proficiency bonus (+2, at 1st level) + your Charisma modifier (probably +2 or +3). Your Spell Save DC is 8 + your proficiency bonus + your Charisma modifier. Note that, unlike with attacking with a sword or whatever, you do not need to make an attack roll with all spells.

In addition, you use your Charisma modifier when setting the saving throw DC for a warlock spell you cast and when making an attack roll with one. Spell save DC = 8 + your proficiency bonus + your Charisma modifier . Spell attack modifier = your proficiency bonus + your Charisma modifier . Spellcasting Focus. You can use an arcane focus as a spellcasting focus for your warlock spells. Eldritch Invocations

Spell save DC = 8 + your proficiency bonus + your Intelligence modifier. Spell attack modifier = your proficiency bonus + your Intelligence modifier. The attack modifier is used when making your attack roll. This is the roll to determine if your (spell) attack hits. The process is the same as for other forms of attack:

Some Spells also require an Attack roll. The ability modifier used for a spell Attack depends on the Spellcasting Ability of the spellcaster. Proficiency Bonus: You add your Proficiency Bonus to your Attack roll when you Attack using a weapon with which you have proficiency, as well as when you Attack with a spell. Rolling 1 or 20

There are two ways a spell attack can give the enemy a way out. The first way, which applies to this, is that of needing to actually make the magic strike the opponent for it to succeed. In this case the caster makes an attack roll against the targets AC adding both their spellcasting attribute modifier (wisdom, as you indicated) and their proficiency bonus.

Your attack bonus with a spell attack equals your spellcasting ability modifier + your proficiency bonus. Most spells that require attack rolls involve ranged attacks. https://www.dndbeyond.com/sources/basic-rules/spellcasting

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Your attack bonus with a spell attack equals your spellcasting ability modifier + your proficiency bonus. And from page 201 in the PHB we can see that cantrips are considered spells: Every spell has a …

You only add your spell attack modifier to your attack rolls with spells, not to damage. So with fire bolt, you would roll 1d20 + 5 against your targets AC to see if you hit, and you would only roll 1d10 for damage.. Note that most spells DO NOT require an attack roll of any kind.