You can do archery and dual wielding. But the best thing is to specialize. Start by making a Wood Elf. (Immune sleep , advantage against charms , +10 feet of moove , perception ) With 17 dexterity. Then you must choose to specialize in dual or archery.
Ranged: Begin Archery style. Go to Auntie Ethel and eat her hair for +1 dexterity. (18 dex) Then at level 4 take +2 dext to reach 20. At level 5 with proficiency, dexterity and your bow +1 and your combat style you have +11 on the attack (you will hit at everytime and more if you get blessing from priest or paladin). At level 8 take sharpshooter which reduces your attack by 5 but increases your damage by 10 if you hit. (you can take sharpshooter at lv 4 instead wich is very strong too). Each turn, use your hunter's mark bonus action, and then land 2 ranged attacks that do massive damage on every boss. (The only default is that all your damage is piercing, some enemies can be resistant to this).
Dual wielding: Begin dual wielding style. Go to Auntie Ethel and eat her hair for +1 dexterity. (18 dex) Then at level 4 take +2 dext to get to 20 or dual wielding feat to equip 2 rapiers. At level 5 you gain an extra attack. You can make 3 attacks at 1D8+4 damage and +1D6 if you have the hunter's mark (but this will cost you a bonus action and therefore the first turn you will have one less attack). In addition you will have to keep your concentration for the hunter's mark, face to face it is more difficult. (At lv 8 take +2 dex or dual wielding feat).
The ranged buid is stronger in my opinion in baldur gate 3. They haven't implemented sharpshooter yet but mods can do this.
Just because the OP says they are new to this world, I will say that this way of maxing stats and optimising damage isn’t at all necessary to succeed. If you want your ranger to be more effective out of combat (eg to talk to NPCs) you could, say, stick with 16 DEX and pop two points into CHA instead. You need to give it some thought if your ranger isn’t going to be ineffective in combat, but many different builds can work.
Getting Auntie Ethel’s hair in particular involves specific roleplaying choices that you may not want to make, so don’t feel you have to! Plus, even if you want to there’s a tricky battle so don’t rush to her house. I wouldn’t go before level 4 if you’re new to BG3, though it is beatable at level 3 (chances are you’ll be at least level 3 by the time you first meet Ethel if you follow what seems to be the logical sequence of events the game wants you to follow).
